Based on the Coast Guard Historian’s timeline, https://www.history.uscg.mil/research/chronology/
With inspiration from Mike Kelso

May 5

John M. “Muddy” Waters Jr. USCG

1947  The first meeting of the permanent International Civil Aviation Organization was held in Montreal, Canada with the Coast Guard being represented by LT John M. Waters, USCG. (Great biography here.) His book, Bloody Winter, about the convoy battles during the Winter of 1942-43 is highly recommended.

1950  Congress approved the Uniform Code of Military Justice for the “government of the armed forces of the United States.”

1973  The last Coast Guard personnel assigned to Vietnam departed for the United States.

2004  The Coast Guard presented the Purple Heart to BM3 Joseph Ruggiero in Miami for injuries sustained in action against the enemy while defending the Khawr Al Amaya Oil Terminal in Iraq on April 24, 2004.  Ruggiero’s shipmate, DC3 Nathan Bruckenthal, was killed in this same bombing and was posthumously awarded the Purple Heart.  They were the first Coast Guard recipients of the Purple Heart since the Vietnam War.