His duties of assignment within the Army included overseeing the Advanced Armor School, tours at West Point as professor of German and later as Executive Tactical Officer of the 3rd Cadet Regiment. Also, he accumulated two Vietnam tours, including one as an operations officer for the Army of the Republic of Vietnam's High Command. In this assignment, he worked with translators and executive officers of the 3rd Battalion, 4th Regiment of the 1st Air Cavalry Division. During his second tour, he commanded the 5th Battalion of the 7th Regiment of the 1st Air Cavalry Division. While in Vietnam, Healy served with the now-famous Norman Schwarzkopf. Healy also served as a superior officer to then-subordinate Tommy Franks as well.