Metz, France 1944. 
Positively...
taken from fb/D.Del Moral/History of WW2

Positively warned...

The commander of the US 82nd Airborne Division, Brigadier General James Gavin (1907-1990), right and the commander of the British 2nd Army, Lieutenant General Miles Dempsey (1896-1969), discuss a plan of joint actions in the time of Operation Market Garden; September 1944.

Joint strategy

A US Military Policeman holding two captured German Luftwaffe pilots under guard.