... BRITISH CONVOYS AT SEA How They Proceed in Open Waters and the Change of Tactics Necessitated by Narrows When far out at sea, the principal danger to a Convoy is from U-boats. For this reason the ships of the escort are usually arranged in the manner illustrated in the upper drawing. Ahead go the destroyers, and on the flanks are more destroyers or corvettes: preceding the merchantmen, also, ...

... The Technique of Sub-Stratosphere Bombing by Allied and German Aircraft Described by B. TUNBRIDGE RECENT daylight bombing successes of American Flying Fortresses have pro duced new interest in the question of possible ceiling heights at which modern warplanes can operate. In the early days of flying, speed and (later) weight were the main considerations in up-to-date design. During the last ...