Polish army order of battle in 1939

Polish OOB during the Invasion of Poland. In the late thirties 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).

The overall operational plan assumed the creation of 30 infantry divisions, 9 reserve divisions, 11 cavalry brigades, two motorized brigades, 3 mountain brigades and a number of smaller units. Most Polish forces were grouped into 6 armies and a number of corps-sized "Operational Groups". Later in the course of the war other operational units were created.

Created on July 11, 1939, under Major General Kazimierz Fabrycy. Armia Karpaty was created after Germany annexed Czechoslovakia and created a puppet state of Slovakia. The main aim of the army was to secure mountain passes in the Carpathians. Initially the army consisted of 2 improvised mountain brigades and a number of smaller units, but later in the course of war was joined by forces of the withdrawing Armia Kraków.

Additionally, mobilisation plans called for creation of the Tarnów Group consisting of:

Created on March 23, 1939, as the main pivot of Polish defence. Its main task was to delay advancing German troops and withdraw eastwards along the northern line of the Carpathians. It consisted of 5 infantry divisions, 1 mountain brigade, 1 motorized cavalry brigade, 1 mountain brigade and 1 cavalry brigade under gen. Antoni Szylling.

An improvised army created on September 4 from 1 motorized brigade and various smaller units concentrated around Lublin, Sandomierz and upper Vistula. Commanded by mj. gen. Tadeusz Piskor.

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