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A1rsh1p advantage aerial torpedoes aerial vessels aerial warfare aero aeroplane air fleet air raids air service altitude anti-aircraft attack average balloon battle line Belgium bombs British buoyancy carry cars Count Zeppelin currents damage dangerous developed displaces effect Emden enemy engine power experts explosive favour fighting fire float flying machine France French fuel future gas bags Germany gondola gunners guns and searchlights Hamburg harbours Heligoland high speed hundred hydrogen Illustrated London immense increased keel killed land defence lifting power light lighter than air limited Lord Sydenham ment miles an hour military motor nation naval Zeppelin navy non-rigid non-rigid airships North Sea pelins petrol engine pilot plane pressure propellers raiders raids on England range of action rigid airship rise scouting ship soldiers submarines success super-plane super-Zeppelin tons traffic type of airship volume weather weight whilst wind Zeppelin at night Zeppelin raids