What Have We Learned, Charlie Brown? (1983)

As they begin their journey home from their student exchange term, Charlie Brown and the gang find themselves sidetracked. They have severe car trouble and more importantly, they pass by various monuments to World Wars I & II. With Linus guiding them through these memorials, they learn about the events of the wars and the sacrifices required of the troops who fought them.

Unfortunately the movie What Have We Learned, Charlie Brown? is not yet available on HBO Max.