The bad soldier Smith(1963)

The film around the intelligence officer Captain Smith plays in the headquarters of a British tank regiment shortly after the beginning of the invasion of 1944, where Le Havre waws to be overrun by allied troops and forced to surrender. Smith refuses to continue the fight as he is convinced that the war has become meaningless, he came to that conclusion due to the denial of the request of a German general to evacuate the French civilian population.