It's Everybody's War (1942)

A small town in America cheers as its young men march off to military service, but then the Japanese attack on Pearl Harbor strikes fear into the town with the awareness that their boys may end up in harm's way. When the Philippines fall, most of the young men are captured or killed, and the town comes to understand its place in the war. Goaded by grief, the people of the town vow to do everything possible to fulfill their part in ending the war.