First to Fight (1967)

Jack is the sole survivor of a Japanese attack on his squad at Guadalcanal. Because of his heroism and the fact that he is still alive, he becomes a Medal of Honor hero. He returns to train new recruits for the Marines and falls for a girl named Peggy. When training and marriage leave him with an empty feeling, he decides on a transfer back to the front lines. Soon he will find that marriage and life will change his outlook on the grueling battles that lie ahead.