Battle of Legnica
During the Mongol invasion of Europe, Mongol forces defeat a Polish-led army in Silesia; two days later they rout the Hungarians at Mohi.
During the Mongol invasion of Europe, Mongol forces defeat a Polish-led army in Silesia; two days later they rout the Hungarians at Mohi.
The allied forces of Poland and Lithuania defeat the Teutonic Knights in one of the largest battles of medieval Europe.
A coalition army led by King John III Sobieski of Poland relieves the siege of Vienna, defeating the Ottomans and halting their advance into Central Europe.
Germany invades Poland, starting the deadliest conflict in human history, which ends with Japan's formal surrender on 2 September 1945.
Nazi Germany and its collaborators systematically murder some six million European Jews, along with millions of other victims.
The Red Army liberates the Auschwitz concentration and extermination camp, where about 1.1 million people were murdered; the date is now International Holocaust Remembrance Day.