Activated 19 April 1944 as the 1st Provisional Marine Brigade on Guadalcanal, Solomon Islands.
Redesignated 7 September 1944 as the 6th Marine Division at Tassafaronga, Guadalcanal, Solomon Islands.
Inactivated 31 March 1946 at Tsingtao, China.
Major General Lemuel C. Shepherd Jr. Assumed command September 1944
Headquarters Battalion, 6th Marine Division
6th Engineer Battalion
6th Tank Battalion
6th Pioneer Battalion
4th Marine Regiment
22nd Marine Regiment
29th Marine Regiment
15th Marine Regiment (Artillery)
6th Service Battalion
6th Medical Battalion
6th Motor Transport Battalion
Okinawa