3rd Battalion, 1st Marine Regiment
| 3rd Battalion 1st Marines | |
|---|---|
3rd Battalion 1st Marines Insignia
|
|
| Active | 1 March 1941 – October 1941 16 February 1942 – 20 March 1947 4 August 1950 – present |
| Allegiance |
 United States of America |
| Branch |
 United States Marine Corps
|
| Type | Light infantry |
| Role | Locate, close with, and destroy the enemy through fire and maneuver, and repel enemy assault through fire and close combat. |
| Size | 1,200 |
| Part of |
1st Marine Regiment 1st Marine Division |
| Garrison/HQ | Marine Corps Base Camp Pendleton |
| Nickname(s) | "Thundering Third" |
| Motto(s) | The Balls of the Corps |
| Engagements |
Operation Desert Storm |
| Commanders | |
| Current commander |
LtCol Matthew C. Danner |
Operation Desert Storm
1992 Los Angeles Riots
Operation United Shield
War on Terror
3rd Battalion 1st Marines (3/1) is an infantry battalion in the United States Marine Corps based out of Camp Horno on Marine Corps Base Camp Pendleton, California. Nicknamed the "Thundering Third", the battalion consists of approximately 1220 Marines and Sailors and falls under the command of the 1st Marine Regiment and the 1st Marine Division.
3rd Battalion, 1st Marines was activated on 1 March 1941 at Guantanamo Bay, Cuba and assigned to the 1st Marine Division. In April of that year, they were relocated to Marine Barracks, Parris Island, South Carolina; the unit was subsequently deactivated in October of that year.
On 16 February 1942, 3/1 was re-activated at New River, North Carolina. In July 1942, they deployed to Wellington, New Zealand and participated in the following World War II campaigns: Guadalcanal, Eastern New Guinea, New Britain, Peleliu and Okinawa. Beginning in April 1946, they participated in the occupation of North China. The battalion was again deactivated on 20 March 1947 as part of the post-war drawdown of forces.
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