. . . "bombing raids on the city" . "Aerial bombardment militarily ineffective" . . . . "air raid on Warsaw in 1939" . "Bombing of Warsaw in World War II" . . . . "the air raids" . "bombing of nearby Warsaw" . "Bombing of Warsaw" . "Warsaw" . "city of Warsaw was bombed" . "6,000\u20137,000" . "aerial bombardment campaign" . "the bombing in September 1939" . "Germany" . "bombing of Warsaw" . . . "air attacks against Warsaw" . "aerial bombardment" . . "bombs fell on Warsaw" . . . . . . "delayed the attack" . "Poland" . "bombed the Polish capital of Warsaw" . . "done with Warsaw" . "bombing raids" . . . . "Bombing of Warsaw in World War II" .