I saw a movie (in English) on TV probably in the late 1970s. It had been a theatrical release, and was along the lines of The Great Escape, Three Days of the Condor, etc. There was a group of American and English officers who were going behind enemy lines on a mission. I don’t recall if it was WW2 or the Cold War. An English man (bald, with glasses, I think), said goodbye to his family in England and  his son in boarding school. Seems like his role was that of a cartographer or translator. They went off on their mission, and I think they were successful. But as they tried to escape, they were all supposed to get on an airplane. The enemy was chasing them, and the English man was shot. At the end, one of the officers was informing the boy at his school.