1st Battalion, 1st Marines

1st Battalion, 1st Marines

1st Marine Division

Marines from 1st Battalion, 1st Marine Regiment, prepare for a rapid fire on the enemy target during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

‘First of the First’ prepare to fight

Marines from 1st Battalion, 1st Marine Regiment, prepare for a rapid fire on the enemy target during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Marines from 1st Battalion, 1st Marine Regiment, prepare for a rapid fire on the enemy target during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Cpl. Christopher Stephens, mortarman, 1st Battalion, 1st Marine Regiment, prepares rounds for Pfc. Thomas Curtis, mortarman, 1/1, during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif. and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

‘First of the First’ prepare to fight

Cpl. Christopher Stephens, mortarman, 1st Battalion, 1st Marine Regiment, prepares rounds for Pfc. Thomas Curtis, mortarman, 1/1, during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif. and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Cpl. Christopher Stephens, mortarman, 1st Battalion, 1st Marine Regiment, prepares rounds for Pfc. Thomas Curtis, mortarman, 1/1, during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, Calif. and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Lance Cpl. Kyle Hollenback, mortarman, 1st Battalion, 1st Marine Regiment, loads a while Pfc. Sean Carlson, mortarman, 1/1, stabilizes the stand during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

‘First of the First’ prepare to fight

Lance Cpl. Kyle Hollenback, mortarman, 1st Battalion, 1st Marine Regiment, loads a while Pfc. Sean Carlson, mortarman, 1/1, stabilizes the stand during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Lance Cpl. Kyle Hollenback, mortarman, 1st Battalion, 1st Marine Regiment, loads a while Pfc. Sean Carlson, mortarman, 1/1, stabilizes the stand during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Camp Pendleton, and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Cpl. Blake Arnold, forward observer, mortarman, 1st Battalion, 1st Marine Regiment, calculates the target coordinates during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Campy Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

‘First of the First’ prepare to fight

Cpl. Blake Arnold, forward observer, mortarman, 1st Battalion, 1st Marine Regiment, calculates the target coordinates during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Campy Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Cpl. Blake Arnold, forward observer, mortarman, 1st Battalion, 1st Marine Regiment, calculates the target coordinates during an individual training exercise at Range 410A aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. 1/1 is based out of Marine Corps Base Campy Pendleton, Calif., and is serving as part of the GCE during ITX 5-17. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Mission

The mission of the Marine Infantry Battalion is to locate, close with, and destroy the enemy by fire and maneuver, or to repel his assault by fire and close combat.

1st Battalion, 1st Marines

LtCol Bryan K. Grayson
Commanding Officer, 1st Bn 1st Marines
VIEW BIO

SgtMaj. R. M. Olmos Jr.
Sergeant Major, 1st Battalion, 1st Marines
VIEW BIO

1st Marine Division News

Golden Gloves: The Fighters of the 1st Marine Division Boxing Team
May 2, 2018

Marine Receives Navy and Marine Corps Medal for Heroic Actions
September 8, 2017

Giving After Grief
November 9, 2016

Marines' Memorial Association reconnects with modern generation of Marines
September 19, 2016

1st Battalion 7th Marine Regiment ‘Super Squad’ awarded for excellence
August 15, 2016

Links