Courage of Lassie
(1946)
Bill's separated from his litter and grows up on an island, making friends with the wild creatures until he's found and adopted by young Kathie, who nurses and cares of him until he's grown. A car accident separates him from her, and he's drafted into K-9 duty in the trenches until battle fatigue takes its toll and he turns vicious. And even though he finds his way back home, he may be condemned as a killer.
