Gallant Bess (1946)

An orphaned young man, Tex, has loved and trained his loyal horse, keeping alive his father's dream of starting a ranch. He decides to put his life on hold to serve the United States during World War 2. Tragedy strikes, but Tex comes back to life with the help of his horse, Bess, whose amazing tricks and service become an inspiration to the brave men risking their lives in Japan. The MGM film is loosely based on a true story, and the mare in the film is played by the real-life Gallant Bess.