Lynch joined the
United States Army from Chicago in 1964, and by December 15, 1967, was serving as a
specialist four in Company D, 1st Battalion (Airmobile),
12th Cavalry Regiment,
1st Cavalry Division (Airmobile). During a firefight on that day, near
My An,
Binh Dinh Province,
Republic of Vietnam, Lynch rescued three wounded soldiers and stayed behind to protect them when the rest of the
company withdrew. He single-handedly defended the wounded men against enemy attack until locating a friendly force that could evacuate them. Lynch was subsequently promoted to
sergeant and awarded the
Medal of Honor for his actions. The medal was formally presented to him by President
Richard Nixon in 1970. ==Later life==