The 'Messerschmitt' is a post war two seater trainer with fixed landing gear and the 'jeeps' are post 1948 Land Rovers.
One American soldier wears the shoulder patch of the 50th armored division, a postwar Army National Guard unit formed in 1946.
The German panzers are British Archer tank destroyers supplied to Egypt after World War Two.. Because of the long barrel the gun was mounted facing to the rear. So all the ones in the movie are actually driving in reverse.