The Marine Recruit Training Regiment San Diego (MCRDSD), based at San Diego, California, is a training regiment of the United States Marine Corps.

Each battalion is responsible for ensuring that each company within it is following the procedures set forth by the Recruit Training Regiment.

The West Coast depot is in charge the basic training of all male candidates who join the Marine Corps from the west of the Mississippi[2] In 1921, the MCRDSD was formally commissioned and in 1923, after moving from Mare Navy Shipyards to Vallejo, California to San Diego, it became the primary recruiting center for the west coast.

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.

[3] This article incorporates public domain material from websites or documents of the United States Marine Corps.