When Hawkeye is trying to talk Klinger out of re-enlisting in the Army, he mentions how Klinger once made his own wings to fly out of camp. In The Trial of Henry Blake - Klinger makes his own wings and tries to fly out of camp. Henry jokes that he might have made it, if he'd had a better tail wind.
Col. Potter has been reading the book "Ride the Man Down" since Season 4.
The US Army Nurse Corps celebrated it's 121st year On February 2 2022. However by law men couldn't be nurses until 1956. Interestingly enough, the first woman to get a Purple Heart was a nurse. Lt. Annie Fox received the award for her actions at Hickam Field during the attack on Pearl Harbor.