Messerschmidt Bf 109. Mit über 33.000 Einheiten bis heute eines der meist gebauten (und seltenst erhaltenen) Flugzeuge der Welt .
The second production B-17F-1 was converted into the first YB-40 Prototype. The development of the Lockheed – Vega built XB-YB-40 ,was the Army Air Forces attempt to bring additional defensive firepower to the bomber formations flying against the German Luftwaffe fighters.The X in XB was used for” EXPERIMENTAL” and the Y in YB signified ” SERVICE TEST “.They were rushed into combat in May, 1943 with the 92ndBG at ALCONBURY.
Vb-1 Sq. SB2C Helldivers approaching USS Yorktown Marianas, Pacific, July 1944