30. SUPPLY
30.1 OVERVIEW
30.2 SUPPLY SOURCES
30.3 SUPPLY LINES
30.4 SUPPLY DETERMINATION
30.5 UNIT SUPPLY
30.6 HEX SUPPLY

30.1 OVERVIEW:
30.11 To varying degrees, all units except partisans require supply. Units which are not supplied have their abilities impaired and may face elimination (30.5).
30.12 Hexes also must be supplied to allow unit, airbase, rocket base, port and fortification construction, the operation of air and naval units and redeployments. Air and naval units have the supply and oil status of the hex in which they are based (30.61).
30.13 Supply is traced from supply sources, along a land and/or sea supply line, to the units or hexes being supplied (30.3). Some supply sources are unlimited and may supply units of any type, while others are limited and may only supply certain types of units (30.2).
30.14 The supply status of ground units and hexes is determined twice during each player turn (30.4). The supply status of air and naval units is that of the hex in which they are based. Initial supply determination takes place during the movement phase, after the movement of air and naval units, but before the movement of ground units (30.42). Post-combat supply determination takes place during the post-combat adjustment phase, immediately before unit construction and redeployment (30.43).
30.15 Ground units which are out of supply are isolated. Hexes which are out of supply are unsupplied and limit the ability of air and naval units to operate from them. Both ground units and hexes may be partially supplied if they are able to draw supply from a limited supply source.
30.16 Ground units which are isolated at the end of initial supply determination may not move during the movement or combat phases. With some exceptions, ground units, airbases, rocket bases and bridgeheads which are still isolated at the end of post-combat supply determination are eliminated. Air and naval units which are based in isolated hexes may not carry out missions during the movement and combat phase of their player turn. Air and naval units are never eliminated because of isolation.

30.2 SUPPLY SOURCES:
30.21 UNLIMITED AND LIMITED SUPPLY SOURCES: The type of supply which a supply source provides depends on whether it is an unlimited or limited supply source. Unlimited supply sources provide full supply; limited supply sources provide partial supply.
30.211 SUPPLY CAPACITY: A supply source may supply any number of units and hexes, unless expressly limited to supplying units only in its hex.
30.22 UNLIMITED SUPPLY SOURCES:
30.221 An unlimited supply source is capable of supplying all types of units.
30.222 EUROPEAN AXIS:
A. Berlin and Rome are unlimited supply sources for all German, Italian and Axis minor country units, even if Italy is neutral.
B. Each undamaged synthetic oil plant is an unlimited supply source for all German, Italian and Axis minor country units.
30.223 JAPAN:
A. Tokyo, Osaka, Kagoshima and Seoul are unlimited supply sources for all Japanese units.
30.224 WESTERN ALLIES:
A. London and Paris are unlimited Western Allied supply sources.
B. The U.S. and South Africa boxes are unlimited Western Allied supply sources. Supply may be traced from these boxes. Sea supply may be traced from the U.S. box to western Europe even if the U.S. is not at war with the Axis, although it may then only be protected by British and French naval units. Sea supply may be traced from the South Africa box only through the Indian Ocean to Suez, Basra or Abadan.
C. The Australia box is an unlimited Western Allied supply source unless Australia has surrendered. The India box is an unlimited Western Allied supply source unless India has surrendered. Supply may be traced from these boxes.
D. Pearl Harbor, Manila and Colombo are unlimited Western Allied supply sources for all Western Allied units.
30.225 RUSSIA:
A. The Urals box is an unlimited Russian supply source.
B. Supply may be traced from the Urals box onto the European mapboard through the Russian hexes along the eastern edge of the European mapboard, as far north as A62 and as far south as Z53, and through the Persian hexes on the eastern edge of the European mapboard if they are under Allied control and the Persian BRP route is open.
C. Supply may be traced from the Urals box onto the Pacific mapboard through the Russian hexes on the western edge of the Pacific mapboard (A23 to F18) and through hexes G18 to L15 if Communist China is a Russian minor ally and the hexes are Russian-controlled. Communist China may receive supply from Russian supply sources whether or not it is a Russian minor ally.
30.226 NATIONALIST CHINA:
A. Chungking, Canton, Nanking, Peking and Shanghai are unlimited supply sources for all Nationalist Chinese units, including the Flying Tigers.
B. Nationalist China may draw unlimited supply from Western Allied and Russian supply sources.
30.227 ETHIOPIA: Units in Ethiopia are always in unlimited supply (88.45).
30.23 MAJOR POWER CAPITALS: If Germany, Italy, France or Britain surrenders, its capital (Berlin, Rome, Paris or London, respectively) ceases to act as an unlimited supply source. If Britain surrenders and reenters the war, London remains a limited supply source even if under British control.
30.24 MINOR POWER CAPITALS: An unconquered minor country capital is an unlimited supply source for all the units of that minor country, but is only a limited supply source for units belonging to other countries, including a major power ally or conqueror.
30.25 BRIDGEHEADS: A bridgehead placed by seaborne invasion is an unlimited supply source during post-combat supply determination of the player turn in which it is placed (EXCEPTION: Supply may not be traced out of a bridgehead if it is in an enemy ZoC – 30.321). Oil effects offset in any of the supply zones from which the invasion was launched are also offset in the supply zone containing the bridgehead. Bridgeheads do not act as supply sources in subsequent turns, although a sea supply line may be traced into land hexes through a bridgehead (30.331).
30.26 LIMITED SUPPLY SOURCES:
30.261 ONLY INFANTRY COMPONENT OF GROUND UNITS SUPPLIED: A limited supply source only supplies the infantry component of ground units. A limited supply source does not provide supply to air and naval units or the mechanized or airborne portion of ground units. All ground units in limited supply have their CTL reduced by one (30.522A).
30.262 NON-CAPITAL MAJOR POWER OBJECTIVES:
A. EUROPEAN AXIS: Breslau, Cologne, Essen, Leipzig, Genoa and Milan are limited European Axis supply sources.
B. WESTERN ALLIES: Birmingham, Manchester, Lyon and Marseilles are limited Western Allied supply sources.
C. RUSSIA: Vladivostok and Irkutsk are a limited supply source for Russian units in them only.
30.263 CONQUERED MAJOR POWER CAPITALS: Once Germany, Italy, France or Britain surrenders, its capital (Berlin, Rome, Paris or London, respectively) is a limited supply source. If a capital is enemy-controlled, but the country itself is not in a state of surrender, the capital provides supply to neither side.
30.264 MINOR COUNTRY CAPITALS: A minor country capital is a limited supply source for the major power to which it is associated or allied, or which otherwise controls it. A minor country capital may supply all minor countries controlled by that major power and all allied major powers and their minor countries, subject to cooperation restrictions.
30.265 COLONIAL CAPITALS: A colonial capital (Europe: Al Kuwait, Algiers, Amman, Baghdad, Cairo, Damascus, Jerusalem, Rabat, Tangier, Tirane, Tripoli, Tunis; Pacific: Harbin, Mukden, Taipei, Saigon, Rangoon, Kuala Lumpur, Singapore, Kuching, Batavia, Palembang, Balikpapan, Ulan Bator, Kyzyl) is a limited supply source for units of the major power which controls it, all minor countries controlled by that major power and all allied major powers and their minor countries. Neutral Vichy colonial capitals are Axis limited supply sources only if under Axis control. Kiev is a limited supply source only if the Ukraine is associated to or allied with Germany.
30.266 CONQUERED CHINESE OBJECTIVES AND YENAN: All Chinese objective hexes are limited supply sources for the side which controls them, including Chungking. Yenan is a limited supply source for Communist Chinese units.
30.267 ICs: Russian-controlled ICs are a limited supply source for Russian and Russian minor country units in them only (37.7).
30.27 SUPPLY SOURCES FOR SINGLE HEXES: Where a hex is a supply source only for the units in that hex, those units may move out of the hex once their supply status has been determined.
EXAMPLE: Ground units which begin their turn in Russian ICs may move out of such hexes, but units which were not otherwise supplied may not move into such hexes to improve their supply status or draw supply from such hexes.
30.28 FORTS: Fortresses and fortifications are not supply sources, but they prevent the elimination of isolated ground units in them (32.242).
30.29 RESTRICTIONS ON SUPPLY SOURCES:
30.291 WESTERN ALLIED AND RUSSIAN SUPPLY SOURCES: Western Allied units may not be supplied from Russian supply sources, and vice versa (EXCEPTION: Nationalist Chinese units may draw supply from Russian supply sources). This prohibition extends to colonies and minor countries associated with, allied to or otherwise controlled by the Western Allies and Russia.
30.292 AXIS SUPPLY FROM RUSSIAN SUPPLY SOURCES: Axis units may not draw supply from captured ICs. Other Russian supply sources, such as minor country capitals controlled by Russia, become Axis supply sources once they come under Axis control.
30.293 JAPANESE SUPPLY FROM RUSSIAN SUPPLY SOURCES: Japanese units may not draw supply from Russian supply sources.
30.294 NATIONALIST CHINESE AND WESTERN ALLIED SUPPLY SOURCES: Western Allied supply sources may supply Nationalist Chinese units. Nationalist Chinese supply sources may provide only limited supply to Western Allied units (EXCEPTION: The Flying Tigers). Western Allied supply sources may supply Communist Chinese units if Communist China is not an ally of Russia. The ability of Communist and Nationalist China to draw supply from one another's supply sources depends on the Chinese Resistance level at the end of the previous turn (78.923, 79.623).

30.3 SUPPLY LINES:
30.31 GENERAL: Units and hexes are supplied by tracing a supply line from a supply source.
30.311 ON BOARD HEXES ONLY: A land or sea supply line may not go off the board, although it may be traced from a mapboard box onto the board. Supply lines must be traced through hexes which appear on the board. (EXCEPTION: Supply between northern Sweden and Finland; Russian supply from hex A37 in Siberia off the northern edge of the Pacific mapboard to hexes A41 and A42 in Kamchatka; sea supply through allowable off-board hexes - 21.217).
30.312 LENGTH OF SUPPLY LINES: A supply line may be of unlimited length, subject to 30.334.
30.32 LAND SUPPLY:
30.321 LAND SUPPLY LINES: A land supply line consists of a line of controlled land hexes, free of enemy ZoCs, from a supply source to a unit or hex. The supply source or the unit or hex being supplied may be in an enemy ZoC, provided all hexes in the supply line itself are free of enemy ZoCs (EXCEPTION: Supply may not be traced from a bridgehead, even while it is a supply source, if it is in an enemy ZoC).
30.322 EFFECT OF ZoCs ADJACENT TO SUPPLY SOURCES: A unit or hex adjacent to a supply source may not trace a supply line directly from that supply source if both the supply source and the unit or hex are in the ZoC of the same enemy armor unit. A supply line may be traced out of the supply source to another hex or hexes not in an enemy ZoC, then to the unit or hexes. If the supply source were fortified, the enemy ZoC would not extend into the hex containing the supply source and this restriction would not apply. Similarly, a supply line may be traced through a hex containing a fortification.
30.323 SUPPLY MAY BE TRACED OVER ALLIED HEXES: A supply line may be traced over hexes controlled by the major power tracing the supply line, by any of its associated or allied minor countries, or by any of its major power allies or their associated or allied minor countries. A major power may not prevent an ally from tracing a supply line over hexes it controls.
30.324 PARTISANS: Supply lines may not be traced through enemy partisans. A supply line may be traced through a hex containing a friendly partisan, but only if the hex was already controlled by the supplying side before the partisan occupied it.
30.325 PERSIA: Supply may be traced into and through Persia normally. Russia may trace a supply line from the Urals box through the Persian hexes on the eastern edge of the European mapboard only if the Persian BRP route has been opened (30.225B, 40.5).
30.326 BURMA ROAD: The Western Allies may trace supply to China by land only from the India box, to Mandalay, then through Mandalay to Kunming. This does not prevent the Western Allies from tracing supply to China by sea through Haiphong or a Chinese port, provided the requirements for such a sea supply line are met.
30.327 NEW GUINEA: Full supply may not be traced into jungle/mountain hexes in New Guinea (EXCEPTION: Full supply may be traced by sea into Port Moresby or Sorong). Neither full nor partial supply may be traced out of jungle/mountain hexes in New Guinea (EXCEPTION: Partial supply may be traced out of Port Moresby or Sorong).

This restriction prevents the construction of airbases in the New Guinea jungle/mountain hexes adjacent to Port Moresby (18.142C).

30.328 CROSSING ARROWS: A supply line may cross over water at a crossing arrow without risk of interception. This is not considered to be sea supply (30.33).
30.329 MAPBOARD BOXES: Land supply lines may be traced from the Urals box onto the European mapboard and from the Urals, India and Australia boxes onto the Pacific mapboard through hexes along the mapboard edge (5.72, 30.311, 71.61, 72.61).
30.33 SEA SUPPLY:
30.331 SEA SUPPLY LINES: Supply lines may be traced over sea hexes as follows:
A. ORIGIN: Sea supply lines may originate in any one of the following locations:
B. DESTINATION: Sea supply lines may terminate in any one of the following locations:
C. SEA SUPPLY FROM MAPBOARD BOXES: Sea supply may be traced from a mapboard box onto the board as follows:
D. RESTRICTION: Sea supply lines may not be traced to a mapboard box (EXCEPTION: Sea supply to ship oil or BRPs to the South Africa, India, or Australia boxes – 33.43B, 40).

This restriction prevents the Western Allies from circumventing the need to use oil reserves associated with a mapboard box by tracing sea supply to that mapboard box (33.4715).

30.332 SUPPLY FROM SUPPLY ZONES WHICH RECEIVE SEA SUPPLY:
A. LAND SUPPLY LINES: A land supply line may be traced from a port, bridgehead or one-hex island in which a sea supply line terminates. The requirement that all land portions of a supply line consist of controlled hexes free of enemy ZoCs (30.321) does not prevent units in a port or bridgehead in an enemy ZoC from receiving supply by sea, but the ZoC would prevent any continuation of the supply line past the port, one-hex island or bridgehead.
B. SEA SUPPLY LINES: Any number of sea supply lines may be traced from one or more ports in a supply zone which has itself been supplied by sea, other than the port into which sea supply to that supply zone was traced. Sea supply lines from such a supply zone do not provide supply if the sea supply traced to that supply zone is disrupted by enemy action (30.38).
C. TYPE OF SUPPLY: The type of supply (partial or full) provided by sea supply from a supply zone is that of the supply zone itself; a supply zone which is partially supplied provides only partial supply; a supply zone which is fully supplied provides full supply. This determination is made during the supply determination segment in which the various sea supply lines are traced.
EXAMPLE: The British control the Middle East, which contains various limited supply sources (30.265). During initial supply determination of the Allied player turn, one Indian Ocean transport is used to provide full supply to Suez from the South Africa box and three separate sea supply lines are traced from Alexandria to Malta, Cyprus and a British bridgehead in Sicily. The sea supply through the Indian Ocean succeeds. The Middle Eastern supply zone is then fully supplied. Malta, Cyprus and the British bridgehead in Sicily will then also be fully supplied unless one or more of the sea supply lines to those locations are disrupted by enemy action.
Had sea supply from the South Africa box to Suez been disrupted by Axis air units, Malta, Cyprus and the British bridgehead in Sicily would be partially supplied at best.

30.333 SUPPLY CAPACITY: There is no limit to the number of units which may be supplied by sea or the number of sea supply lines which may be traced from an eligible location. Sea supply from a limited supply source (30.26) or a supply zone which has received only partial supply provides only partial supply.
30.334 LENGTH OF SEA SUPPLY LINES: Sea supply lines are subject to the range restrictions in 21.3612.
30.3341 A sea supply line which touches on a port does not provide supply to that port or its supply zone, nor does it prevent the tracing of sea supply from that port if otherwise permitted.
30.335 ZoCs HAVE NO EFFECT ON SEA SUPPLY LINES: ZoCs only affect the land portion of a supply line. Hostile armor in Calais or Harwich, for example, would not affect sea supply through the English Channel.
30.34 SUPPLY ZONES:
30.341 DEFINITION: Each area of contiguous, controlled hexes which can be supplied by land from the same supply source, port, bridgehead or eligible island hex (30.331B) is considered to be a single supply zone. The Australia, India and Urals boxes are considered to be part of the supply zones tracing land supply lines from them.
30.342 RESTRICTIONS: The supplying player may attempt to trace only a single sea supply line to one designated port or bridgehead in each supply zone (EXCEPTIONS: More than one sea supply line may be traced to a supply zone if a single sea supply line cannot provide supply to all hexes in that supply zone because of the presence of enemy ZoCs; or if the additional sea supply lines are for the purposes of shipping oil counters or BRP grants by sea - 33.43B, 40.22).
EXAMPLE: An Axis sea supply line is traced to Libya to supply Axis air and armor units in North Africa. The sea supply line must be traced to either Tripoli or Tobruk, but not both. The situation would be different if British armor units had invaded at LL19 and exploited to MM19, splitting Libya into two supply zones. Both ports could then receive supply.
30.343 ISLAND GROUPS A SINGLE SUPPLY ZONE: Each Pacific island group is treated as a single supply zone (EXCEPTION: Islands that are captured during a combat phase are treated as a separate supply zone for purposes of post-combat supply). Sea supply is traced to island groups as follows:
A. The supplying player traces a single sea supply line to each island group wholly or partially under his control.
B. Each sea supply line to an island group enters the island group at any controlled island designated by the supplying player, provided the range requirements set out in 21.3612 are met.
C. Once a sea supply line has entered an island group, it supplies all the friendly islands in that group, without regard to range restrictions, unless disrupted by enemy action (30.343E).
D. The opposing player may attempt to disrupt a sea supply line after it enters an island group. The supplying player must then indicate which islands in the island group are being supplied, the sequence in which they are being supplied, and the sea hexes through which the sea supply line is being traced between the islands (30.352).
E. As with other naval activities, a sea supply line to an island group may be intercepted by enemy naval units only once, but may be subject to repeated air attacks.
F. If a sea supply line is disrupted after it enters an island group, the islands reached by the sea supply line before it is disrupted receive supply; the islands not yet reached by the sea supply do not.

The exception in 30.343 applies only to contested island groups. If a player tries and fails to trace sea supply to the islands he controls in a contested island group, then invades one of the enemy-controlled islands, the supply from the newly-captured island does not flow into the previously-controlled islands. They are considered to be a separate supply zone during post-combat supply, and their supply status is therefore determined by the success or failure of the sea supply attempt during initial supply determination in that player turn.

30.35 SEA SUPPLY PRESUMED:
30.351 SEA SUPPLY TO ALL SUPPLY ZONES PRESUMED: The moving player is presumed to supply all supply zones which are legally able to receive supply. A player may not refuse to provide sea supply to a supply zone, although he is under no obligation to protect his sea supply lines (EXCEPTION: Sea supply from mapboard boxes is optional). If a supply zone contains two or more ports or bridgeheads, the moving player must select one as the terminus of the mandatory sea supply line to that supply zone (30.342).
30.352 ONUS ON DEFENDER TO ATTEMPT INTERCEPTIONS: The burden is on the defending player to state any intention to disrupt a sea supply line. After the moving player has announced which air and naval units, if any, are protecting his sea supply lines (30.36), the opposing player may require the moving player to indicate the exact hexes through which each sea supply line is being traced so he may decide whether he will attempt interception (30.37).

At times a certain amount of alertness is required to play A World at War well. If the defender fails to realize that sea supply is being traced to a supply zone and does not attempt to intercept that sea supply line, the sea supply to that supply zone succeeds. The moving player may tip off the defender when he assigns protection to his sea supply lines, but he is under no obligation to identify his unprotected sea supply lines or inform his opponent of their existence. It is up to the defender to identify the various supply zones which are receiving sea supply and ask for the additional information required for interception.

30.36 PROTECTION OF SEA SUPPLY:
30.361 PROTECTION OPTIONAL: Naval units are not required for a sea supply line to be traced on the mapboard. However, since sea supply may be intercepted, uninverted, fully supplied naval units not subject to naval oil effects may be designated to protect sea supply lines at no BRP cost. A naval force assigned to protect a sea supply line must contain at least one destroyer factor unless the sea supply is being carried by a transport. In both cases, loss of the required destroyer factor or transport does not disrupt the supply line or negate the protection of the sea supply line by other naval units (30.381). Losses from submarine attacks against destroyers protecting sea supply may be taken from destroyers based in any area eligible to provide protection for the sea supply line (22.9432). Naval units are eligible to provide protection for sea supply lines only if based in a port or mapboard box or operating in an SW box, as follows:
A. The port or mapboard box from which sea supply is being traced.
B. Any port touched by the sea supply line to meet the requirements of 30.334. Such naval units protect the sea supply line only once it has reached their hex.
C. The Atlantic SW box, for sea supply lines traced from the Atlantic U.S. box.
D. The Pacific SW box, for Western Allied sea supply lines traced on the Pacific or Asian front.
E. The Indian Ocean SW box, for Western Allied sea supply lines traced on the Southeast Asian front and for sea supply lines traced to Suez, Basra or Abadan.
F. The Pacific SW box, for any Japanese sea supply lines.
30.3611 Naval units based in ports other than the port from which a sea supply line is being traced or through which it passes (30.361B) may not protect that sea supply line, although they may attempt to counter-intercept any enemy naval interception of that sea supply line.
30.3612 An undefended sea supply line is considered to have the Naval Nationality DRM of the major power which controls the port from which the sea supply line originates or, if the sea supply line originates in a port controlled by an associated or allied minor country, the Naval Nationality DRM of that minor country.
30.362 PROTECTION BY NAVAL UNITS IN AN SW BOX: If more than one sea supply line is being protected by naval units in an SW box, the moving player must indicate which naval units are protecting which supply line before enemy air, naval or submarine attacks on the sea supply line are announced or attempted.
30.363 SEA SUPPLY LINES DEFEND SEPARATELY: Sea supply lines to different supply zones are traced, attacked and defended separate­ly. Even if two sea supply lines traverse the same sea hexes, they are considered to have passed through them at different times and are therefore distinct. The moving player assigns naval units to protect sea supply lines and announces the order in which his sea supply lines will be traced before the defender attempts any air and naval interceptions. Air and naval interceptions are then resolved sequentially for each sea supply line. Sea supply lines carrying supply, oil and BRPs to the same destination base, even if they originated in different locations, may be made separately or simultaneously for protection against enemy interception, at the moving player's option.
EXAMPLE: The Japanese player traces a sea supply line from Kagoshima through Manila and Manado to Hollandia, and traces a second sea supply line from Kagoshima through Manila, Manado and Hollandia to Rabaul. If the first sea supply line to Hollandia is disrupted and the second sea supply line (to Rabaul) is successful, then Hollandia and its supply zone is unsupplied and Rabaul and its supply zone is supplied.
30.364 AIR COVER: Uninverted air units in operational air bases may provide air cover for a sea supply line (18.58C).
30.37 INTERCEPTION OF SEA SUPPLY: Sea supply lines, whether protected or unprotected, may be intercepted by enemy naval units or attacked by enemy air units in the same manner as other naval activities.
30.38 DISRUPTION OF SEA SUPPLY:
30.381 DISRUPTION:
A. UNPROTECTED SEA SUPPLY LINES: An unprotected sea supply line is disrupted if it is attacked by enemy air or naval units, including submarines. No dice rolls are made and the attacker cannot incur losses, although his air or naval units are inverted. Enemy air units which are unable to attack because of air cover over an unprotected sea supply line do not disrupt the sea supply line.
B. PROTECTED SEA SUPPLY LINES: A protected sea supply line is disrupted if:
30.382 ABANDONING SEA SUPPLY: A player may voluntarily abandon an attempt to sea supply if the sea supply’s protecting naval force is attacked by enemy air units or submarines outside of naval combat or is engaged in naval combat by intercepting enemy naval units (22.28).
30.383 EFFECTS OF DISRUPTION: Disruption of a sea supply line prevents supply by sea to the units and hexes which were to have received supply from that sea supply line. This does not prohibit the supply of such units and hexes by land.
30.39 AIR SUPPLY: See 18.53.

30.4 SUPPLY DETERMINATION:
30.41 SUPPLY DETERMINED TWICE PER TURN: The supply status of ground units and hexes is determined twice during each player turn. This determination only applies to ground units belonging to and hexes controlled by the moving player. The supply status of ground units and hexes does not change during the opposing player's turn.
30.42 INITIAL SUPPLY DETERMINATION: Supply status is initially determined during the movement phase, after the movement of air units, counterair attacks and the movement of naval units.
30.43 POST-COMBAT SUPPLY DETERMINATION: The supply status of ground units and hexes which were isolated or partially supplied at the end of initial supply determination is also resolved during post-combat supply determination. During post-combat supply determination, supply may only be traced to:
A. Ground units and hexes which were not supplied during initial supply determination (sea supply to the same supply zone may not be attempted twice - 30.44).
B. Hexes which came under the supplying player's control during his movement and combat phase (supply flows into newly-acquired areas contiguous to hexes supplied during initial supply determination - 30.45).
C. Ground units and hexes which were in limited supply or subject to oil effects following initial supply determination but during post-combat supply determination are able to receive full supply or offset those oil effects (30.46).
30.431 REDEPLOYMENT THROUGH NEWLY-SUPPLIED HEXES PERMITTED: Newly-captured hexes which are supplied in post-combat supply determination are eligible to receive redeployments.
30.44 SECOND ATTEMPTS AT SEA SUPPLY PROHIBITED: A player may not attempt sea supply to a supply zone during initial supply determination, then again try to supply that supply zone during post-combat supply determination (EXCEPTIONS: 30.45, 30.46); nor may a player defer sea supply to a supply zone until post-combat supply determination if sea supply could have been attempted to that supply zone during initial supply determination.
30.45 EXPANSION OF SUPPLY ZONES: Once a supply zone has been supplied, the supply zone itself acts as a supply source during post-combat supply determination so that supply flows into areas contiguous to the supply zone. If a supply zone expands as a result of the capture of an additional hex capable of receiving sea supply (30.331B), the 30.44 prohibition against tracing sea supply to the same sea zone twice does not apply if sea supply is traced to the newly-acquired hex.
30.46 UPGRADING SUPPLY OR OIL STATUS: Supply zones receiving sea supply from a supply zone in limited supply or under oil effects are also considered to be in limited supply or under those oil effects. If, after initial supply determination, the movement of ground units or ground combat results allow the original supply zone to receive full supply or to offset oil effects during post-combat supply determination, the status of all supply zones which received sea supply from the original supply zone are also upgraded without the need to trace another sea supply line. The 30.44 prohibition against tracing sea supply to the same zone twice does not apply if the post-combat sea supply line would upgrade the supply or oil status of the supply zone, provided that an upgraded supply line could not be attempted during initial supply determination.
30.47 DURATION OF SUPPLY: Ground units and hexes which are supplied during either initial supply determination or post-combat supply determination of a player's turn remain supplied until the end of initial supply determination of that player's next player turn. Thus:
A. A ground unit which is supplied during initial supply determination may enter an unsupplied hex without adversely affecting its supply status.
B. Uninverted air and naval units may protect their own sea supply lines during initial supply determination by flying air cover and attacking enemy naval interceptions of sea supply lines, provided their bases were operational during their previous player turn.
C. Uninverted air and naval units in operational bases may intercept enemy naval activities during the opposing player turn.
30.48 NEUTRAL SUPPLY: All neutral major power and minor country hexes and units are considered to be fully supplied by the neutral country prior to its entry into the war (EXCEPTION: Spanish Morocco receives only partial supply).

30.5 UNIT SUPPLY:
30.51 FULLY SUPPLIED UNITS: Ground units which draw supply from an unlimited supply source are fully supplied and function without impairment unless subject to oil effects. Air and naval units based in hexes which draw supply from an unlimited supply source function without impairment unless the hex in which they are based is subject to oil effects. Throughout the rules, whenever reference is made to a requirement that a unit be "supplied", this means supplied from an unlimited supply source.
30.52 PARTIALLY SUPPLIED UNITS:
30.521 A limited supply source only supplies the infantry component of ground units and only partially supplies air and naval units. Ground units which draw supply from a limited supply source and air and naval units based in hexes which draw supply from a limited supply source are partially supplied and suffer from the following impairments:
30.522 GROUND UNITS:
A. CTL REDUCED: All ground units of all types have their CTL reduced by one.
B. ARMOR AND MECHANIZED UNITS: Armor units in both theaters and British and American mechanized infantry units in Europe lose their mechanized component and act as infantry units for all purposes, although they may conduct offensive operations and their combat factor for attrition and defensive purposes is unaffected. Such units:
C. AIRBORNE UNITS: Airborne units may not airdrop.
D. NAVAL ACTIVITIES: Ground units may not sea transport or conduct seaborne invasions.
E. ATTRITION LOSSES: Ground units may not be taken as attrition losses from a supply zone from which sea supply was last traced to their attrition zone (14.52A).
30.523 AIR UNITS:
A. LAND-BASED AIR UNITS: Air units may stage and redeploy freely from affected bases, and interceptors may defend partially supplied bases from enemy bombing. Air units based in partially supplied bases:
B. STRATEGIC WARFARE: Offensive strategic warfare by strategic bombers, flying bombs and rockets is prohibited from partially supplied bases.
30.524 NAVAL UNITS:
A. NAVAL UNITS: Naval units may base change and redeploy freely from partially supplied ports. Naval units based in partially supplied ports (EXCEPTION: Submarines based in fortified ports - 32.248) are subject to the following impairments:
B. STRATEGIC WARFARE: Ports which are partially supplied may not be used and are not counted as modifiers for offensive submarine warfare. Partially supplied naval units may operate in an SW box.
30.525 AIRBASES, ROCKET BASES AND BRIDGEHEADS: Airbases, rocket bases and bridgeheads are not eliminated by partial supply.
30.53 UNSUPPLIED UNITS: All the impairments triggered by partial supply apply to unsupplied ground units and to air and naval units based in hexes which are unsupplied. In addition:
30.531 GROUND UNITS: Ground units may not move during the movement phase, and, if permitted to attack (30.522), may not advance after combat. Ground units are counted in attrition totals but may not advance into hexes gained from attrition. Ground units may not redeploy.
30.532 AIR UNITS: Air units may not redeploy to or through unsupplied bases.
30.533 NAVAL UNITS: Naval units may not redeploy to or through unsupplied ports.
30.54 ELIMINATION OF UNSUPPLIED UNITS:
30.541 ELIMINATION: Except as set out below, ground units, airbases, rocket bases and bridgeheads which are unsupplied during initial supply determination are eliminated at the end of the ensuing post-combat supply determination if still unsupplied. Hex control is unaffected by their removal.
30.542 EXCEPTIONS: Units are not eliminated by isolation in the following circumstances:
A. Ground units in fortresses or fortifications, including West Wall and Maginot hexes.
B. Ground units in the Pacific theater which are in ports or one-hex islands.
C. Japanese ground units in jungle or jungle/mountain hexes. This exception does not extend to Thai, Wang or Indian National Army units.
D. Chinese ground units in China.
E. Air and naval units.
30.543 The restoration of supply to isolated ground units must take place during a subsequent supply determination segment to take effect. Supply may not be traced to ground units or hexes at any other time.
EXAMPLE - SUPPLY BY LAND: In Summer 1941, Germany invades Russia and isolates a number of Russian ground units. During initial supply determination of the Russian Summer 1941 player turn, supply cannot be traced to these units. The units therefore suffer the impairments set out in 30.531.
If Russian counterattacks during the Russian Summer 1941 player turn break the encirclement, these units receive supply during post-combat supply determination of the Summer 1941 Russian player turn, and their abilities are fully restored.
If a supply line could not be traced to the encircled units during either supply determination segment, the units would be removed at the end of post-combat supply determination of the Russian Summer 1941 player turn.
EXAMPLE - SUPPLY BY SEA: During the redeployment phase of the Summer 1944 Japanese player turn, Japan redeploys a number of air factors within range of New Britain in order to cut supply to an American 2-2 infantry unit in Rabaul and a second American 1-2 infantry unit in the beach hex southwest of Rabaul.
During initial supply determination of the Allied Fall 1944 player turn, the Allied player attempts to sea supply Rabaul, but the Japanese air units are too strong and the sea supply line is cut. Both American infantry units are isolated. The American 2-2 infantry unit in Rabaul would survive (30.542B), but the American 1-2 infantry unit, which is not in a port, would be eliminated at the end of post-combat supply determination of the Allied Fall 1944 player turn. An Allied invasion would not save the unit, because if the Allies invaded New Britain they could not place a bridgehead in it (31.221), and sea supply could not again be attempted to New Britain until the following player turn (30.44).

30.544 REBUILDING ISOLATED UNITS: Ground units which are eliminated due to isolation may be rebuilt in the game turn in which they are eliminated at double the normal BRP construction cost or in subsequent turns at the normal BRP construction cost (27.13).
30.545 EFFECT OF ISOLATION ON SURVIVING UNITS: Units which are not eliminated by isolation (30.542) survive indefinitely, although they suffer all other impairments associated with isolation. Ground units which are not eliminated by isolation (30.542A-D) have the DM of their hex, including the DM of any fortification or fortress and any other terrain feature in their hex, reduced by one each turn until they defend at face value (32.244). Ground units which are not eliminated by isolation never defend at less than face value. For units which enter such hexes, see 15.33D.
30.55 UNITS WHICH ARE AUTOMATICALLY SUPPLIED:
30.551 AUTOMATIC SUPPLY: Units are automatically supplied, without the need for supply lines, in the following circumstances:
A. Exploiting armor units, even if they did not move during exploitation, are automatically in full supply during the game turn following their exploitation, even if weather conditions or terrain negate their mechanized component. Such units may not exploit during their next turn unless they are supplied normally. Automatic full supply expires at the end of initial supply determination during the owner’s second player turn following the unit’s exploitation.
B. Partisans.
C. Chindits are always in at least limited supply.
D. Japanese units in Japan.
E. Bridgeheads placed by seaborne invasion are in supply, and are unlimited supply sources, in the turn they are placed.
30.552 AUTOMATIC SUPPLY NEGATED BY REDEPLOYMENT: Armor units which are redeployed in the same player turn as their exploitation do not receive automatic supply during their next turn.

30.6 HEX SUPPLY:
30.61 Certain activities may not be carried out in or through hexes which are unsupplied:
A. Airbases, rocket bases and port counters may only be constructed in fully supplied hexes.
B. Air units operating from fully supplied bases may carry out missions and interceptions or modify an interception, search or surprise die roll. Air units in partially supplied and isolated bases suffer the impairments set out in 30.523.
C. Naval units operating from fully supplied bases may protect sea supply lines, carry out missions and provide and protect sea escort. Some naval activities also require fully supplied ports along their route (21.36). Naval units in partially supplied and isolated ports suffer the impairments set out in 30.524.
D. Units may only be constructed in fully supplied hexes.
E. Ground units may only redeploy out of, into or through fully or partially supplied hexes.
F. Air units may redeploy out of unsupplied or partially supplied air bases, but only into or through fully or partially supplied air bases.
G. Naval units may redeploy out of unsupplied or partially supplied bases, but only into or through fully or partially supplied bases.
30.62 Ground units may move or exploit into unsupplied hexes, advance into unsupplied hexes after combat, and sea transport into or invade unsupplied hexes. Airborne units may airdrop into unsupplied hexes without becoming unsupplied during that player turn. In many cases, these activities will involve entry into unsupplied hexes, as the hexes will have been enemy-controlled. The capture of such hexes does not necessarily mean that they will be supplied.
30.63 For the effects of isolation on hex control, see 29.31.