. "Air base construction" . . "1939" . . "Luftwaffe construction units" . "Construction engineer corps" . . . "150,000 soldiers, Hiwis,POWs" . . "Luftwaffe construction units" . "1944" . "10,000 soldiers" . "new wartime construction units" . . "1945" . . "1944" . "Air base construction and destruction" . "Air force engineer corps" . .