MCRDSD 1st Recruit Training Battalion

Here are some useful links and messages for Marines who have been assigned to 1st Recruit Training Battalion. Welcome aboard!

Commanding Officer's Welcome Letter
Family Readiness Officer's Welcome Letter

*Each Company (Alpha, Bravo, Charlie, Delta) holds events that Drill Instructor families are encouraged to attend. Here is a brief description of what you can expect. We hope to see you there!

*Seasoned 1st Battalion Drill Instructor spouses have provided some experience and advice for incoming families. Be sure to 
read this over to help prepare yourself for what to expect as a Drill Instructor's family while on the drill field.

*If you're moving to the San Diego area and are interested in military housing, please visit the Lincoln Military Housing web site at

*The  Marine Corps Community Services (MCCS) Marine Corps Recruit Depot webpage has information on the School Liaison Program, Exceptional Family Member Program, classes through Marine Corps Family Team Building, counseling services, employment opportunity and assistance, events on MCRD and more! Visit the site at to learn more and see all that is available to you.


  Commanding Officer

  Lieutenant Colonel
Gregory A. Grayson 

  1st Recruit Training Battalion
  Marine Corps Recruit Depot
                                   San Diego, CA

CO's Bio

  Sergeant Major
  Marcus D. Reese Sr.
  1st Recruit Training Battalion
  Marine Corps Recruit Depot
  San Diego, CA

  SgtMaj’s Bio

In 1921, the MCRDSD was formally commissioned and in 1923, it became the primary recruiting center for the west coast. During World War II, the flow of recruits into the base surged, with 18,000 recruits arriving in one month. In 1948, the base was formally named Marine Corps Recruit Depot San Diego and was home to the Recruit Training Regiment.
First Recruit training Battalion is one of the three Battalions under the Regiment, whose main mission is to train new United States Marine Corps recruits, specifically enlisted recruited from west of the Mississippi River, but also from some areas east of the river, such as Wisconsin, Michigan, the Chicago metropolitan area and New Orleans.

Recruit training includes a thirteen week process during which the recruit becomes cut off from the civilian world and must adapt to a Marine Corps lifestyle. During training, drill instructors train recruits in a wide variety of subjects including weapons training, Marine Corps Martial Arts Program, personal hygiene and cleanliness, close order drill, and Marine Corps history. The training emphasizes physical fitness, and recruits must attain a minimum standard of fitness to graduate by passing a Physical Fitness Test. Recruits must also meet minimum combat-oriented swimming qualifications, qualify in rifle marksmanship with the M16A4 service rifle, and pass a 54-hour simulated combat exercise known as "The Crucible".

Unlike training at Parris Island, recruits must leave the depot to conduct field training. Three weeks of the recruit’s training is spent at Edson Range aboard Marine Corps Base Camp Pendleton, where recruits fire on the rifle range, conduct field training, and undergo the Crucible. At the conclusion, recruits return to MCRD San Diego for graduation.

MARINE CORPS RECRUIT DEPOT SAN DIEGO, CA, UNITED STATES 03.08.2016 Video by Sgt. John Lamb Marine Corps Recruit Depot, San Diego  U.S. Marine Corps drill instructors with C Company, 1st Recruit Training Battalion, Recruit Training Regiment, supervise and train recruits on pugil stick fighting aboard Marine Corps Recruit Depot San Diego, Calif., March 9, 2016. Recruits are taught pugil sticks to improve their ability to fight effectively in close quarters, with techniques from the Marine Corps Martial Arts Program. (U.S. Marine Corps motion imagery by Sgt. John C. Lamb/RELEASED)


The battalion is comprised of four training companies: Alpha, Bravo, Charlie and Delta. The recruit training battalion is responsible ensuring that each company is following the procedures set forth by the Recruit Training Regiment.
Each company is responsible to follow the standards established by the Commandant of the Marine Corps to train, teach, mentor, and above all, lead recruits through a demanding standard-based training system.









The Crucible begins on T-55 Tuesday through T-56 Wednesday.
Click HERE to download the Matrix.