This is a very fascinating curio from WWII starring Jimmy Stewart. This is an Army Air Corps recruitment short in which Stewart, after a year in the service, addresses the public to sell them on joining. The film is briskly paced, interesting to watch and has a lot of great footage of aircraft (particularly interesting to airplane aficionados are the early B-17 A and B versions--pretty rare to see this footage). While I doubt if this film would excite most kids, it is a great film historically. Plus, it is one of the few films Stewart made exploiting his service, as he tended to downplay this and few people actually knew that he eventually retired a Brigadeer General after many years of service.
By the way, one of the young guys in the film that was thrilled about joining up had a girlfriend that looks like Judy Garland. It's not--I checked and it's Juanita Stark. They could have been sisters!