1941-1946

• Activated 1 January 1941 at Guantanamo Bay, Cuba, as the 3d Battalion, 7th Marines and assigned to the 1st Marine Brigade, Fleet Marine Force
• Reassigned during February 1941 to the 1st Marine Division, Fleet Marine Force
• Relocated during april1941 to Parris Island, South Carolina
• Relocated during September 1941 to New River, North Carolina
• Attached during March 1942 to the 3d Marine Brigade
• Deployed during April 1942 to Samoa
• Detached during august 1942 from the 3d Marine Brigade and reassigned to the 1st Marine Division
• Participated in the following World War II campaigns:
  • Guadalcanal
  • Eastern New Guinea
  • New Britain
  • Peleliu
  • Okinawa
• Participated in the occupation of north China, September 1945- April 1946
• Deactivated 15 April 1946

1950-1964

• Reactivated 11 September 1950 at Kobe, Japan and assigned to the 1st Marine Division, Fleet Marine Force
• Deployed during September 1950 to the republic of Korea
• Participated in the Korean War, September 1950- July 1953 operating from:
  • Inchon-Seoul
  • Chosin Reservoir
  • East Central Front
  • Western Front
• Participated in the defense of the Korean Demilitarized Zone, July 1953- march 1955
• Relocated during March 1955 to Camp Pendleton, California
• Participated in the Cuban missile crisis, November- December 1962

1965-1990

• Deployed during June 1965 to camp Schwab, Okinawa
• Participated in the war in Vietnam, July 1965- October 1970 operating from:
  • Qui Nhom
  • Da Nang
  • Chu Lai
  • An Hoa
  • Dai Loc
• Relocated during October 1970 to Camp Pendleton California, and reassigned to the 5th Marine Amphibious Brigade
• Reassigned during April 1971 to the 1st Marine Division, Fleet Marine Force
• Participated in the battalion rotation between the 3d Marine Division on Okinawa and the Divisions stationed in the United States during the 1980s and the 1990s
• Relocated during January 1990 to the 1st Marine Division
• Participated in earthquake relief operations in the Philippines July-September 1990

1991-2009

• Participated in operations Desert Shield and Desert Storm, Southwest Asia January- April 1991
• Element participated in operation United Shield, Somalia, February-March 1995
• Deployed during February 2003 to Kuwait in support of Operation Enduring Freedom
• Participated in Operation Iraqi Freedom, Iraq, March-September 2003, February-September 2004, September 2005 - March 2006, and November 2007 - May 2008, and October 2008 - April 2009

2010-Present

• Participated in Operation Enduring Freedom, Afghanistan, March - October 2010