only on the loss of her last unit. The USA cannot be conquered but will end the war at once if all France, Britain and the USSR are conquered (a Soviet surrender does not count as a "conquest" although American chances in the absence of Britain and France, the USSR having surrendered, would be minimal). French units may not stack with British units – they may commit Ground Support to each other's attacks, as this flies over the German defenders, but not Defensive Air Support – nor may British units enter Paris nor the Maginot Line, but they may conduct joint attacks. France is controlled by the Soviet player if there is no separate French player. Soviet units may not stack or combine with Western Allied units for combat, although the Allies may send a small expeditionary force (of no more than ten factors, i.e. about three corps) to fight in the USSR – this facility was removed from later versions of the game system. Britain and the USA share victory conditions, and their units may always stack and fight together. The Allies may build partisans, forcing Germany to garrison Belgrade and Athens to prevent BRP loss. Partisans may also be built in the USSR or France. A common house rule was to allow partisans in Poland to represent the Warsaw uprising. In 1939 Germany sets up last of the major powers, and has a free offensive against Poland. The Soviets may then seize "Eastern Europe" (Eastern Poland, Bessarabia and the Baltic states), which prevents Germany moving in on the Baltic States which would put her forces dangerously close to Leningrad. The Axis player has a free choice as to when Italy enters the war, and up to 10 Italian combat factors (often including an air unit or the two small Italian armored corps) may be "lent" to participate for free in German offensives. Italy may declare war during the battle of France, allowing Italian air units to be lent to Germany or for German panzer corps to execute (or threaten) a thrust south of the Alps. In the 1981 and subsequent editions Italy may surrender (as in reality) once there are no Axis units in North Africa (Germany may thwart this by a sneaky invasion of Casablanca), and the Allies have the initiative, control Sicily (or both Sardinia and Corsica) and a foothold on the Italian mainland. Control of