Private First Class Libretti was a member of the 34th Infantry Regiment, 24th Infantry Division. He was Killed in Action while fighting the enemy near Taejon, South Korea, on 20 July 1950.

Libretti was awarded the Purple Heart, the Combat Infantryman's Badge, the Korean Service Medal, the United Nations Service Medal, the National Defense Service Medal, the Korean Presidential Unit Citation, the Republic of Korea War Service Medal and the Army of Occupation Medal (Japan).