Iron Field (1987)

Vladmir Bobylev goes on leave for his 60th anniversary. He takes his wife and son and heads for his native town Kholmy, where he stops with his family at his battle comrade, who suggests a trip to their battle places. The old man agrees almost without hesitation, for after the war hes never been there. They get acquainted with German tourists, and it turns out that one of them also fought here as an officer in the Army of fascist general Paulus.

Unfortunately the movie Iron Field is not yet available on HBO Max.