The invasion of Poland, also known as the September Campaign, Polish Campaign, and Polish Defensive War of 1939, was a joint attack on the Republic of Poland by Nazi Germany, the Slovak Republic, and
Vyacheslav Molotov signs the Molotov–Ribbentrop Pact, a German–Soviet non-aggression pact.
Polish PZL.37 Łoś bomber aircraft in 1939
Peking Plan: Polish destroyers evacuate the Baltic Sea en route to the United Kingdom.
Crimes against the Polish nation committed by Nazi Germany and Axis collaborationist forces during the invasion of Poland, along with auxiliary battalions during the subsequent occupation of Poland in
Memorial to the Wola massacre, the systematic killing of around 40,000–50,000 Polish civilians and enemy combatants by Nazi German troops during the Warsaw Uprising of summer 1944
Execution of ethnic Poles by German SS Einsatzkommando soldiers in Leszno, October 1939
Photos from The Black Book of Poland, published in London in 1942 by Polish government-in-exile
A mass execution of 56 hostages in Bochnia near Kraków, 18 December 1939. In Palmiry, about 1,700 Poles were murdered in secret executions between 7 December 1939, and 17 July 1941.