1987-1990
ACTIVATED 15 OCTOBER 1987 AT CAMP PENDLETON, CALIFORNIA, AS MARINE AMPHIBIOUS UNIT SERVICE SUPPORT GROUP 15 AND ASSIGNED TO THE 1ST FORCE SERVICE SUPPORT GROUP, FLEET MARINE FORCE, PACIFIC
REDESIGNATED 5 FEBRUARY 1988 AS MARINE EXPEDITIONARY UNIT SERVICE SUPPORT GROUP 15
ELEMENTS PARTICIPATED IN EARTHQUAKE RELIEF EFFORTS, CALIFORNIA, OCTOBER 1989
ELEMENTS PARTICIPATED IN SUPPORT OF OPERATION DESERT SHIELD, SOUTHWEST ASIA, AUGUST 1990
1991-2000
PARTICIPATED IN OPERATION FIERY VIGIL, PHILIPPINES, JUNE 1991
PARTICIPATED IN OPERATION RESTORE HOPE, SOMALIA, DECEMBER 1992-JANUARY 1993
PARTICIPATED IN OPERATION SUPPORT HOPE, RWANDA, JULY-AUGUST 1994
PARTICIPATED IN SUPPORT OF OPERATION VIGILANT WARRIOR, SOUTHWEST ASIA, SEPTEMBER-OCTOBER 1994
PARTICIPATED IN OPERATION SOUTHERN WATCH, IRAQ, FEBRUARY 1996 AND JULY 1997
2001-2011
PARTICIPATED IN SUPPORT OF OPERATION STABILISE, EAST TIMOR, FEBRUARY 2000 AND SEPTEMBER 2001
PARTICIPATED IN SUPPORT OF OPERATION ENDURING FREEDOM, AFGHANISTAN, OCTOBER 2001-JANUARY 2002
ELEMENTS PARTICIPATED IN SUPPORT OF HUMANITARIAN EFFORTS, DJIBOUTI, NOVEMBER 2001
DEPLOYED DURING FEBRUARY 2003 TO KUWAIT IN SUPPORT OF OPERATION ENDURING FREEDOM
PARTICIPATED IN OPERATION IRAQI FREEDOM, MARCH-JULY 2003 AND NOVEMBER 2006 - MAY 2007
PARTICIPATED IN SUPPORT OF OPERATION UNIFIED ASSISTANCE, INDONESIA, IN RESPONSE TO THE TSUNAMI DISASTER, DECEMBER 2004 - JANUARY 2005
REDESIGNATED 15 MARCH 2006 AS COMBAT LOGISTICS BATTALION 15 AND ASSIGNED TO COMBAT LOGISTICS REGIMENT 17, 1ST MARINE LOGISTICS GROUP
PARTICIPATED IN HUMANITARIAN RELIEF EFFORTS, PAKISTAN, IN RESPONSE TO FLOODING, AUGUST-OCTOBER 2010
PARTICIPATED IN THE RESCUE OF ETHIOPIAN AND SOMALI REFUGEES AT SEA, GULF OF ADEN, SEPTEMBER-NOVEMBER 2010