Invasion of Poland
Part of World War II, especially its European theater
Battle of Poland.png
From left to right: Luftwaffe bombers over Poland, Schleswig-Holstein attacking the Westerplatte, Wehrmacht soldiers destroying the Polish-German border post, German tank and armored car formation, German and Soviet troops shaking hands following the invasion, Bombing of Warsaw.
Date1 September – 6 October 1939
(1 month and 5 days)
Location
Result German and Soviet victory
Territorial
changes
Polish territory divided among Germany, the Soviet Union, and the Slovak client-state. Free City of Danzig annexed by Germany. Kresy annexed by Soviet Union.
Belligerents
 Germany
Soviet Union
(From 17 September)
Slovak Republic
(See details)
Free City of Danzig
 Poland
Commanders and leaders
Nazi Germany
Soviet Union
Ferdinand Čatloš
(Army Bernolák)
Units involved
Strength

Germany:
66 divisions,
6 brigades,
9,000 guns,[1]
2,750 tanks,
2,315 aircraft[2]
Slovakia:
3 divisions
Joined on 17 September:
Soviet Union:
33+ divisions,
11+ brigades,
4,959 guns,
4,736 tanks,
3,300 aircraft


Total:
1,500,000 Germans,[1]
466,516 Soviets,[3]
51,306 Slovaks
Grand total: 2,000,000+

Poland:
39 divisions
(24 mobilised on September 1),[4]
16 brigades,[4]
4,300 guns,[4]
210 tanks,
670 tankettes
400 aircraft[1]


Total: 1,000,000[Note 1]
Casualties and losses

Germany:[Note 2]
16,343 killed,
3,500 missing,[11]
30,300 wounded
236 tanks destroyed
800 vehicles destroyed
246 aircraft destroyed
Slovakia:
37 killed,
11 missing,
114 wounded
2 aircraft destroyed[12]
Soviet Union:[Note 3]
1,475 killed or missing,
2,383 wounded[3]
or:
5,327 killed, missing and wounded[13]
43 tanks destroyed


Total casualties: 59,000
Poland:[Note 4]
66,000 dead
133,700 wounded
660,000–690,000 captured
132 tanks and armored cars destroyed
327 aircraft destroyed
859,700–889,700 total casualties