World war II - Europe

Im starting with maybe one of the most famous pictures of Second World War; German soldiers moving a road barrier at Germany-Poland border.
Second world war had started only minutes before this picture was taken, when German battleship Schleswig-Holstein and Luftwaffes Stuka dive-bombers started bombing Polands soil. About 4.50AM 1.9.1939. "Blitzkrieg" turned out to be successiful and Danzig was occupied the same day.