Among the battles and operations in which the 65th participated was the Operation "Killer" of January 1951, becoming the first regiment to cross the Han River. In April 1951, the regiment participated in the Uijonber Corridor drives and in June 1951, the 65th was the third regiment to cross the Han Ton River. Master Sergeant Juan E. Negrón received the Medal of Honor posthumously on March 18, 2014, for his courageous actions while serving as a member of Company L, 65th Infantry Regiment, 3d Infantry Division during combat operations against an armed enemy in Kalma-Eri, Korea on April 28, 1951.