Everyone knows about how the Polish Home Army carried out the Warsaw Uprising and how the Polish Army in the West were the first to captured Monte Cassino. What about the Polish Army in the East?
During the Battle of Berlin, German 17th Army and 4th Panzer Army attacked the southern flank of 1st Ukrainian Front, trying to break through to Berlin. At the Battle of Bautzen, between April 21st and 30th 1945, Polish 2nd Army held the Germans off with the aide of Red Army forces. It was probably the bloodiest battle the Polish Army in the East fought, and is something of a controversial event in Polish historiography of the war (esp. since the end of the Cold War).