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Headquarters & Support Battalion


Headquarters & Support Battalion

Marine Corps Installations West

Marine Corps Base Camp Pendleton


The primary mission of the Adjutant’s office is to provide timely and accurate administrative service to the command and its personnel.  Additionally, our office will strive to accomplish the following:

•Seek and maintain a spirit of cooperation with fellow service members and civilian employees.
•Maintain dignity and a professional manner at all times.
•Stay on top of the situation, the job, and the associated duties.
•Look for flexibility and alternatives.

Remember, service is first and foremost when personnel of this command need assistance.  Correct the problem, then treat the cause of the problem.

Hours of operation
The Adjutant/S-1 Office hours of operation are Monday through Friday from 0730 to 1130 and 1300 to 1630.
During the hours of 1130 to 1300, S-1 will have a phone watch to assist Marines.
The Mail Room hours of operation are Monday through Thursday from 1330 to 1530.  Fridays from 1000 to 1400.
Points of contact
 ADJUTANT/Unit Voting Assistance Officer:   (760) 763-2044 
 S-1 Chief:    (760) 763-7415
 S-1 NCOIC:   (760) 763-2904
 Promotions Clerk:   (760) 725-5024
 Awards Clerk:      (760) 725-5024

S-1 Sharepoint site: https://pendleton.mciwest.nmci.usmc.mil/HQ/S1/default.aspx

To be added to voter registration updates please email vote@usmc.mil