Plan Wschód

Plan East (Polish: Plan Wschód) was a Polish defensive military plan, created in the 1920s and 1930s in case of war with the Soviet Union. Unlike Plan Zachód (Plan West), it was being prepared during the whole Interwar period, as the government of the Second Polish Republic treated the Soviet Union as the greatest potential military threat, capable of initiating a full-scale war. However, a handful of loose historical documents are all that remains of the original Plan East today.

Since its establishment following World War I, the Second Polish Republic had been involved in wars and conflicts with almost all of its neighbors (see: Polish-Soviet War, Polish-Ukrainian War, Polish-Lithuanian War, Greater Poland Uprising, Silesian Uprisings, Border conflicts between Poland and Czechoslovakia). However, of these countries, only two were considered major threats — Germany and the Soviet Union.

During the 1920s and 1930s, the leaders of the Republic focused their efforts on countering the potential threat from the East. Fresh were memories of the Polish-Soviet War and the Battle of Warsaw, which saved both Poland and Europe from the spread of Bolshevik revolution by force. Both the Polish Army and the government in Warsaw were certain that war with the Soviets was inevitable, thus preparations for it were far more advanced than preparation for armed conflict with Germany. Only after 1935, when Nazi anti-Polish propaganda increased, did the threat posed by Poland's western neighbor become visible enough for Army planners to begin drawing up Plan West. Still, even by 1939, completed fortifications on the Eastern border of Poland vastly outnumbered those in the West.

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