Officer Candidate School – Marine Corps

Marine Corps Officer Candidate SchoolThe U.S. Marine Corps Officer Candidate School (OCS) is located at Marine Corps Base Quantico in Virginia. The 10-week program identifies and prepares potential commissioned officers of the Marines to assume the responsibilities of an officer.

Marine Corps OCS – The Basics

Marine Corps OCS’ mission is to “educate and train officer candidates in Marine Corps knowledge and skills within a controlled and challenging environment in order to evaluate and screen individuals for the leadership, moral, mental, and physical qualities required for commissioning as a Marine Corps officer.”

Candidates are evaluated on three qualities: leadership skills (50 percent), academics (25 percent), and physical fitness (25 percent). The leadership evaluations are based on command presence, communication skills, decision making, and the ability to lead subordinates. Academic grades are evaluated through written exams and practical application (see next section), and physical fitness at OCS is designed to test strength and endurance under varying conditions.  All courses are developed with the six functional areas of Marine Corps Leadership Development in mind: fidelity, fighter, fitness, family, finances, and future – the six F’s.

Upon completion of Marine Corps OCS, graduates are commissioned at pay grade O-1 (Second Lieutenant). Upon earning a commission as an officer through OCS, all new officers then attend The Basic School for additional training.

Marine Corps OCS Academic Schedule Overview

 Throughout the 10-weeks spent at OCS, candidates will be tested in both a practical application environment and through written exams. There are seven academic exams. Following is a brief overview of the academic syllabus during each week of Marine Corps OCS:

Week 1

  • Marine Leader Development
  • Interior Guard
  • Intro to Close Order Drill
  • Intro to the M16A4 Service Rifle + M16Af Service Rifle Maintenance
  • Customs and Courtesies
  • Intro to the Operation Order + Operation Order Development
  • Ethics
  • Intro to Tactical Movement
  • Offensive Operations 1: Fire Team Tactics

Week 2

  • Field Skills 1 – Cover, Concealment, Camouflage
  • Field Skills 2 – Field Hygiene
  • Field Skills 3 – Patrolling
  • Terrain Model
  • Marine Corps Ethos
  • Decision Making: Boyd’s OODA Loop
  • Marine Corps History 1: Inception through the Civil War

Week 3

  • Land Navigation 1, 2, 3, and 4
  • Marine Corps Mission and Organization & Joint Operations
  • Marine Corps Uniforms
  • Grooming Standards and Body Composition Program
  • Marine Corps History 2: 1866 through 1914

Week 4

  • Uniform Code of Military Justice
  • Code of Conduct and Law of
  • Marine Corps History 3: World War I and Inter-War
  • Offensive Operations 2: Squad Tactics
  • Fraternization

Week 5

  • Marine Corps History 4: World War II
  • Equal Opportunity
  • Sexual Assault Prevention
  • Problem Resolution Methods
  • Substance Abuse

Week 6

  • Leave and Liberty
  • Financial Responsibility
  • Marine Corps History 5: The Korean War
  • Marine Corps History 6: The Vietnam War

Week 7

  • Marine Corps History 7: Post Vietnam through Desert Storm
  • Marine Corps History 8: The Global War on Terror
  • Human Trafficking
  • Sexual Responsibility

Week 8

  • Pregnancy and Parenthood
  • Fundamentals of Leadership Application
  • Obligations of the Officer Corps
  • Operational Stress Control and Suicide Prevention
  • Domestic Abuse

Week 9

  • Introduction to Warfighting

Week 10

  • Leadership Panels and Discussions

How to Apply

Unlike other military OCS programs, applicants interested in becoming an officer through the Marine Corps OCS program must be either a full-time student currently pursuing a four-year college degree or a civilian with a bachelor’s degree. Additionally, applicants must be a U.S. citizen, between 18-28 years old, and able to pass a physical exam.

All applicants must first speak with an Officer Selection Officer (OSO) who will help advise of next steps. Contact an OSO in your area.

Visit the official Marine Corps website for more information on Marine Corps Officer Candidate School.

Learn more about Officer Candidate & Training Schools

Kristen Baker-Geczy is a communications specialist, active duty military spouse, and former MWR marketing coordinator. She was also deployed to Southwest Asia as an Air Force contractor.