. . . . . . . . . . . . . "German ''Luftwaffe''" . "the troublesome" . . . "the intractable development problems" . . . . . "German Army Air Service" . . . . . "German planes" . "having no clear way of receiving and acting on requests from front-line combat personnel" . . "Luftwaffe of the Wehrmacht" . . . . "planes" . "air force" . . . . . "much more powerful engines" . . . . . . . . . "a severe technological barrier" . . . "German aeroplane" . "exceed 1,500 kW" . . . "Wehrmacht Air Force" . . . . . . . "Nazi planes" . "then underway" . "air" . . . . . . . . . . . . . . . . . . . . . . . "German air-force" . . "The Luftwaffe: A History" . . "military flight training in 1944" . . . . "''Luftwaffe''" . "Luftwaffe" . . . . . "the air force" . . . "serious challenge for Germany's aviation engine industry" . . . . . . . . . "formation of the German air arm" . "German bomber plane" . . . . . . . . "Nazi Germany" . "1933" . . . . . . . . . . . . . . "Luftwaffe (German Air Force)" . . . . . . . "Luftwaffe (Wehrmacht)" . "Luftwaffe (''German air force'')" . "German bombing" . "Nazi Germany's Air Force" . . "problems in developing high-powered aviation engines" . . . . . . . "Luftwaffe" . . . . . . . . . . . . . "air force (''Luftwaffe'')" . "Blunders of Hitler's Luftwaffe" . . . "Luftwaffe airmen" . . . . . . . . . . . . . . . . "engines of at least" . . "German Air Force's" . "strictly-experimental" . "troubling situation of being unable to develop combat-reliable piston aviation engines of 1,500 kW (2,000 PS) and above output levels" . . . . . . . "''Luftwaffe'' \u2013 Air Force of Nazi Germany" . . . . . . . . . . . . . . "Luftwaffe pilot" . . . . "German aircraft used in World War II" . . "Germans" . . . "two DB 601As or Es coupled to work on a single propeller shaft" . "developing high-output aviation powerplants of over 1,500 kW apiece" . . . . . "German squadrons" . "German air force" . . . . "West German Air Force" . . . . . . "nearly all German aircraft engines being limited to 1,500 kW (2,000 hp) maximum output levels" . . . . . . . . . . . "Air Ministry" . "German military planes" . . "1945" . . . . "German Luftwaffe" . . . . . "German bombs" . . . . . . "combat-reliable" . "''Luftstreitkr\u00E4fte''" . . . . "air raids" . . . . . . . "airplane pilot" . . "Deutsche Luftwaffe" . . . . . . . . . . . . "100px" . . "German air raid" . "starting and stopping of engine production programs" . "inability to produce piston aviation engines of at least 1,500 kW (2,000 PS) maximum power and above" . . . . "enemy aircraft" . . "considerable challenges in developing" . . . "Luftwaffe (airforce)" . "Luftwaffe (1933\u20131945)" . . "Nazi Luftwaffe" . . "chronic problems" . . . "Air Force officer" . . "German Air Force" . "Axis aviation" . . "Aerial warfare" . . "lack of a strategic bomber design" . . . . . . . . . . . "German pilots" . . "Luftwaffe der Wehrmacht" . "bombers" . "plane" . . . . . . . . . . "airborne units" . . . . . . . . . . . "German fighters" . "Aircraft 119,871 (total production)" . "new aircraft concepts and designs" . . "land based, air-forces" . "Luftwaffe's" . . . . "Personnel 3,400,000 (total in service at any time for 1939\u201345)" . . . . . . . . "German airforce" . . . "would have considerable challenges developing" . "German" . . . . . . "German airmen" . . "German air force (Luftwaffe)" . . "The Luftwaffe and its Aircraft 1936\u20131945" . . . . "aviation" . . . . . . . . . . . "Germany" . . . . . "German aviation" . . . . . . . . . . "pilot" . . . "Luftwaffe (Air Force)" . . . . . . . . . . . . "German bombers" . . . "enemy" . . . . . . "Nazi German bomber aircraft" . . . . . . "without the over-1,500-kW output Jumo 222 engines getting out of their strictly experimental status" . . . . . . . "German aircraft" . . . . . "Luftwaffe Air Force" . "Luftwaffe#War crimes and bombing of non-military targets" . . . "Air Force" . "enemy fighters" .