Not sure if this has been posted before, but there's this delightful 1960s movie, Thirty Six Hours, about a Nazi interrogation in the days before Normandy. Basically, the Nazis set up a fake Allied Occupation Hospital in Germany, complete with English-speaking staff and faux American Military Personnel. They "slip [the American] a mickey" (Actual words from the film) and try and convince him that it's 1950, that the war ended in 1944, and that he has amnesia and needs to tell them the events of the last several days that he can remember. This leads to some nice ATL-looking scenes with Nazis and US army personnel talking amiably.
Captions are my own, save for the first two.
Stars and Stripes for May 15, 1950 in the fake Nazi timeline.
Stars and Stripes for May 16, 1950 in the fake Nazi timeline.
German and American military personnel, along with (then) Senator J D Wallace discuss the current situation in Prussian Indochina.
A German officer regards the map of the Landings at Calais from the Allied Headquarters building in New York.
Huey Long and a clean-shaven Von Hindenburg share a moment in a temporary headquarters in the Rhinelands Confederacy. Long narrowly lost the 1944 US Presidential election to Wallace, and is best known today as the Governor of American China, and for being killed by the Communist firing squad that kicked off the Second China War.