Re the British bomber armament. Air Chief Marshal Harris, C in C Bomber Command was asked by an Air Gunner why they were not given .5 machine guns instead of .303. Harris replied "how far can you see at night on ops", "about 300 yards" was the reply. "Exactly" says Harris "Whats the point of having greater range if you can not see the target". I cannot fault his logic and it confirms that the gunners were more useful as lookouts than engaging night fighters armed with cannon and machine guns in a gunfight.