The first shoulder patch worn the by the 31st. It belonged to the American Expeditionary Force, Siberia.
From 1921-1931, the division was assigned to the Philippine Division (left). In 1931, the 31st Infantry was reassigned to the Philippine Department (right). In 1941, the regiment was again assigned to the Philippine Division, with which it served in combat until 1942.
Japan, Korea, and Fort Ord (1946-1987)
When the regiment was reactivated in Korea in 1946, it was assigned to the 7th Infantry Division (left). It remained part of the 7th until 1957 when infantry regiments were replaced by battle groups. Thereafter, the 1st battle group 31st Infantry served with the 7th Infantry Division until 1963 when it was replaced by the 1st and 2nd Battalions 31st Infantry. They remained with the 7th until 1971 when the division was inactivated in Korea. The 1st Battalion remained in Korea as part of the 2nd Infantry Division (right) until 1987. It is the only battalion of the Army to never serve in the United States. From 1974 to 1985, the 2nd Battalion served with the 7th Infantry Division at Fr. Ord, California. The 6th Battalion 31st Infantry served with the 7th Infantry Division at Ft. Ord from 1974 to 1981.
Ft. Rucker and Ft. Benning (1958-1971)
The 2nd Battle Group 31st Infantry was activated in 1958 at Ft. Rucker, Alabama to support the Aviation School (right). In 1964, it was reorganized as the 5th Battalion 31st Infantry which was transferred to Ft.Benning, Georgia in 1967 and reassigned to the 197th Infantry Brigade (left). The 5th Battalion was inactivated at Ft.Benning in 1971.
US Army Reserve (1959-1965)
The 3rd Battle Group 31st Infantry was formed in the Army Reserve in 1959 and was assigned to the 63rd Infantry Division (right) at Los Angeles. In 1963, the battle group was reorganized as the 3rd Battalion 31st Infantry. It was inactivated in 1965 at Playa del Rey, California.
Ft. Devens, Ft.Lewis, and Vietnam (1965-1971)
In 1965, the 4th Battalion 31st Infantry was activated at Ft Devens , Massachusetts as part of the 196th Light Infantry Brigade (left). TheBattalion served in Vietnam with the 196th from 1966 to 1969 when it was incorporated into the 23d Infantry Division “Americal” (center left). The 4th Battalion returned to the US in 1971 and was inactivated at Ft Lewis.The 6th Battalion 31st Infantry was activated in 1967 at Ft Lewis and was assigned to the Sixth Army (center right) during its training for service in Vietnam . It deployed to Vietnam in 1968 where it served with the 9th Infantry Division until 1970 when it returned to the US and was inactivated at Ft Lewis.
Ft. Irwin (1981-1988)
The 6th Battalion 31st Infantry was transferred from Ft. Ord to Ft. Irwin in 1981. There it was reassigned to the 177th Armored Brigade supporting the National Training Center (NTC). The Battalion was inactivated at Fr. Irwin in 1988.
Ft. Sill ( 1971-1995)
In 1971, the 4th Battalion returned from Vietnam and was assigned to the Field Artillery School at Ft. Sill, Oklahoma (left). It remained assigned to the Field Artillery School until 1978 when it was reassigned to III Corps (center) at Ft. Sill. From 1982 to 1995, it was assigned to the Field Artillery School’s training support organization, the 214th Field Artillery Brigade (right).
Fort Drum, Bosnia, Afghanistan, Iraq, and Djibouti (1996~)
In 1996, the 4th Battalion 31st Infantry was reactivated at Ft. Drum, NY and assigned to the 10th Mountain Division. The battalion subsequently served in Bosnia, Afghanistan, Iraq, and Djibouti. It is the only infantry Battalion in the Army’s history to serve on three continents at the same time.