Armored Vehicles and Units of the German Order Police (Ordnungspolizei) 1936-1945Werner RegenbergEsauritoAvvisami
American Military Helicopters and Vertical/Short Landing and Takeoff Aircraft Since 1941Ted WilliamsEsauritoAvvisami
Luftwaffe Fighter Aces: The Exploits and Tactics of Germany's Greatest PilotsMike SpickEsauritoAvvisami