The following is a list of Polish Armies during World War II, together with their commanders and brigade and division-sized units. For a more detailed list see: Polish army order of battle in 1939.
| Formed before the war | Blue |
|---|---|
| Formed during the war in Poland | Green |
| Formed in exile at later stages of the war | Red |
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Placement of divisions on September 1, 1939
| Karpaty Army (Armia Karpaty) Kazimierz Fabrycy 2nd and 3rd Mountain Bdes, 11th Inf.Div, 24th Inf.Div, 38th Inf.Div | |
| Kraków Army (Armia Kraków) Antoni Szylling 6th, 7th, 21st Mountain, 22nd Mountain, 23rd, 55th Infantry Divisions, 10th Mot., Kraków Cav.Bde., 1st Mountain | |
| Łódź Army (Armia Łódź) Juliusz Rómmel, Wiktor Thommée 2nd Legions, 10th, 28th, 30th Infantry Divisions, Wołyńska and Kresowa Cavalry Brigades | |
| Modlin Army (Armia Modlin) Emil Krukowicz-Przedrzymirski 8th and 20th Infantry Divisions, Mazowiecka and Nowogródzka Cavalry Brigades, Warsaw BON | |
| Pomorze Army (Armia Pomorze) Władysław Bortnowski 4th, 9th, 15th, 16th and 27th Infantry Divisions, Pomorska Cavalry Brigade, Pomorze and Chełm National Defence Bdes, Wisła Independent Unit | |
| Poznań Army (Armia Poznań) Tadeusz Kutrzeba 14th, 17th, 25th and 26th Inf.Div., Podolska and Wielkopolska Cav.Bdes, Poznań and Kalisz National Defence Bdes | |
| Prusy Army (Armia Prusy) Stefan Dąb-Biernacki 3rd Legions, 12th, 13th, 19th, 29th and 36th Inf.Div, Wileńska Cavalry Brigade
| |
| Lublin Army (Armia Lublin) Tadeusz Piskor 39th Inf.Div., Motorised Bde, Sandomierz Group, Komorowski's Cavalry Group | |
| Małopolska Army (Armia Małopolska) Kazimierz Fabrycy See:Karpaty Army above | |
| Warszawa Army (Armia Warszawa) Juliusz Rómmel, Walerian Czuma, Wiktor Thommée | |
| Polish Army in France (Wojsko Polskie we Francji) Władysław Sikorski 1st Grenadier, 2nd Rifle, 10th Armoured Brigade Bde | |
| Polish I Corps in the West (I Korpus Polski) Stanisław Maczek 1st Armoured Division, 1st Para Brigade | |
| II Corps (II Korpus Polski) Władysław Anders 3rd and 5th Infantry Divisions, 2nd Armoured Division | |
| First Army (1 Armia Wojska Polskiego) Zygmunt Berling 1st, 2nd, 3rd, 4th and 6th Infantry Divisions, Armoured Bde, Cavalry Bde | |
| Second Army (2 Armia Wojska Polskiego) Karol Świerczewski 5th, 7th, 8th, 9th, 10th Inf. Divs, 16th Armoured Bde |
During the Invasion of Poland several divisions were grouped into two units smaller than armies: the Wyszków Operational Group and the Narew Independent Operational Group.