12 O'Clock High - Season 1 Episode 4 The Sound of Distant Thunder

Andy Lathrop is an unsophisticated Tennessee boy. Flying as Savage's lead bombardier, he saves Savage's life, gets promoted to 1st Lieutenant, and gets recommended for the DFC. On leave he meets and falls in love with Barmaid Mary Lean and asks her to marry him, she agrees. Later the pub she and her father have is destroyed during an air raid and Mary is killed. Crazed with grief he goes AWOL. He and Savage talk and he reconsiders and returns to duty a little wiser.