Stephen J. Chamberlin

Stephen J. Chamberlin
A man wearing a shirt and tie sits at a desk. On the desk are papers and a cigarette in an ash tray.
Colonel Stephen J. Chamberlin, 1942
Born(1889-12-23)23 December 1889
Spring Hill, Kansas
Died23 October 1971(1971-10-23) (aged 81)
Newport Beach, California
AllegianceUnited States
Service / branchUnited States Army
Years of service1912–1951
RankLieutenant General
Service number0-3397
CommandsFifth United States Army
Battles / warsWorld War I
World War II
AwardsNavy Cross
Army Distinguished Service Medal (4)
Silver Star
Distinguished Service Star (Philippines)
Commander of the Order of the British Empire (Australia)
Order of Military Merit, First Class (Chile)
Grand Officer of the Order of the Nile (Egypt)
Commander of the Order of the Crown with Palm (Belgium)
Croix de Guerre with Palm (Belgium)
Officer of the Legion of Honour (France)
Grand Cross of the Order of the Phoenix (Greece)
Grand Officer of the Order of Orange-Nassau with Swords (Netherlands)

Stephen Jones Chamberlin (23 December 1889 – 23 October 1971) was a lieutenant general in the United States Army who served during World War II as General of the Army Douglas MacArthur's Assistant Chief of Staff, G-3, the staff officer in charge of plans and operations.

Born in Spring Hill, Kansas on 23 December 1889, he was a 1912 graduate of the United States Military Academy at West Point, New York. During World War I, he was aide-de-camp to Major General David C. Shanks, the New York Port of Embarkation commander at Hoboken, New Jersey, for which he was one of twelve army officers who received the Navy Cross.

After the war, he attended the Command and General Staff School at Fort Leavenworth, Kansas, and served on the staff of the Chief of Infantry in the War Department. He attended the Army War College and was posted to the staff of the Army's Hawaiian Division at Fort Shafter, Hawaii, as Assistant Chief of Staff, G-3.

In 1938, he became assistant chief of the Construction Branch in the G-4 Division of War Department General Staff. He became involved in the vast construction program of arsenals, depots, airbases and coastal defenses as the United States rearmed prior to its entry into World War II.

In January 1942, he was sent to Australia, where he became Assistant Chief of Staff, G-3, at General MacArthur's General Headquarters (GHQ), Southwest Pacific Area. In this role, he was responsible for planning and overseeing the execution of MacArthur's major operations, including the New Guinea, Philippines and Borneo campaigns.

Chamberlin was director of the Intelligence Division, G-2, on the War Department General Staff from 1946 to 1948, when he became commander of the Fifth Army. He retired in September 1951, and was then employed as chief of security for the US Air Force's Arnold Engineering Development Center at Arnold Air Force Base, Tennessee. He died on 23 October 1971.