German Ju 87G Stuka dive bomber somewhere in the Soviet Union. One kill painted on the nose. 1942-1944.

Ju 87G Stuka 

Partly completed Heinkel He-162 German fighter jets sit on the assembly line in the underground Junkers factory at Tarthun, Germany, in early April 1945. The huge underground galleries, in a former salt mine, were discovered by the 1st U.S. Army during their advance on Magdeburg. Victor Sierra

Assembly line in a salt mine

Do. 17 crew studying maps before a mission, western France, summer 1940.
(Bundesarchiv Bild 101I-341-0481-39A)