 Corporal Peters requested assignment to Fleet Marine Forces, Pacific, and in March 1966, joined Staging Battalion, Marine Corps Base Camp Pendleton, California, for transfer overseas.In May 1966, he joined Company D, 1st Battalion, 3rd Marines, 3rd Marine Division in the Republic of Vietnam, and served consecutively as fire team leader, squad leader, and non-commissioned officer in charge of the Combined Action Company.He was promoted to Sergeant on September 1, 1966.