When Ronald Reagan's character is awakened, he complains that in his dream he had a date with Ann Sheridan. Reagan had played opposite Sheridan three times including his two previous features, "Juke Girl" and "Kings Row."
Alan Hale's character, Kirk Edwards is a WWI infantry veteran who is one of the aerial gunners. It was not unusual for aerial gunners on British bombers to be much older than the typical British airman early in the war. Some were over 50 years of age. One aerial gunner was 67! He flew several missions before his true age was discovered and he was grounded.
Displeased with Ronald Reagan ending up with the better role due to the comic scene, Errol Flynn refused to ever work with him again.
Ronald Reagan's last film before he joined the military where, by day he worked on training films in Culver City, California and by night, he didn't have to live on a military base, but rather go back to the home he owned in Beverly Hills with his then wife, Jane Wyman.