A 3-dimentsional box formation was developed that allowed the .50 cals of each plane to cover a neigboring plane, creating interlocking fields of fire that made it more difficult for enemy fighters to attack and break up the formation.

B-17 Flying-fortress  Defence Formation

Portrait of Hero of the Soviet Union sniper Vassili Grigorievich Zaitsev

Vassili Zaitsev

14 May 1938 - England and Germany friendly football (soccer) international, Olympic Stadium, Berlin.  By request of the Foreign Office, England players join their German couonterparts in delivering the "German Greeting" (Nazi salute) before the game.  England won the game 6-3.  In another sense, it might be said that Dr Goebbels won the match ... Best regards, JR.