- Period:
- Second World War (1939-1945)
- Rank:
- Major
- Unit:
- 2nd Battalion, 8th Marine Regiment, 2nd Marine Division "The Silent Second", U.S. Marine Corps
"For conspicuous gallantry and intrepidity as Commanding Officer of the Second Battalion, Eighth Marines, SECOND Marine Division, in action against enemy Japanese forces during the assault on Saipan, Marianas Islands, 15 June 1944. With his Battalion assigned to take a heavily fortified objective which was necessary to seize before vehicles, tanks and artillery could be landed, Major Chamberlin assumed command of the Battalion when the Commanding Officer became a casualty shortly after landing and, realizing the importance of the Battalion's mission, immediately proceeded to reorganize his command, after a landing on the beach approximately seven hundred yards from the assigned objective. Exposed to heavy fire from enemy mortars and artillery while moving from unit to unit, he reoriented the attack and then led and directed it toward the objective. Through his outstanding leadership and skillful handling of all elements of his command, Major Chamberlin so disposed his troops that the vital objective was seized the next morning and a beach opened for the landing of vehicles. His aggressive fighting spirit and courageous devotion to duty were at all times in keeping with the highest traditions of the United States Naval Service."
Commanding General, Fleet Marine Force Pacific: Serial 6067