Polish army order of battle in 1939

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This article discusses the Polish order of battle during the invasion of Poland. In the late 1930s Polish headquarters prepared "Plan Zachód" (Plan "West), a plan of mobilization of Polish Army in case of war with Germany. Earlier, the Poles did not regard the Germans as their main threat, priority was given to threat from the Soviets (see: Plan East).^[1]

The overall operational plan assumed the creation of thirty infantry divisions, nine reserve divisions, eleven cavalry brigades, two motorized brigades, three mountain brigades and a number of smaller units. Most Polish forces were grouped into six armies and a number of corps-sized "Operational Groups". Later in the course of the war other operational units were created.