The ground radars which directed a night fighter into proximity with a bomber passing through a box, and the radar set in the fighter required for the final interception, were both swamped by the mass of false returns from the fluttering clouds of Window. Window, introduced in late July 1943, rendered virtually useless the German box system of night fighting. The night fighter, not the Flak battery, was the greatest cause of Bomber Command’s losses all through the middle years of the war.
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The outcome of the Battle of Berlin would depend upon the answers to two questions: Would the Luftwaffe be able to recover from the setback to its long established defensive system caused by the introduction of Window, and would the Bomber Command Pathfinders be able to overcome the problems of blind marking over Berlin? In other words, it was the old formula of war: the balancing of the costs of a campaign against the success gained. Heavy damage is evident in the Steglitz area, near the Friedenau railway station, where most properties have been gutted by fire.ĪIR MINISTRY SECOND WORLD WAR OFFICIAL COLLECTION Part of a vertical photographic reconniassance aerial taken over Berlin, Germany after heavy night raids by Bomber Command aircraft on 23/24 August, 31 August/1 September and 3/4 September 1943.