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Warbirds Resource Group: Luftwaffe Resource Center
This comprehensive site catalogs the planes of the Luftwaffe from 1935 on, and provides detailed specifications on armaments, missiles, bombs and other accessories to air warfare. It does not present a history of their use, but rather a...
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The Luftwaffe, 1933 1945
A site containing information on the German WWII Luftwaffe, including organization, types of aircraft, articles, and lots more. Much of it is quite technical.