Everything You Need to Know About OCS: Officer Candidate School

Officer Candidate School (OCS), or Officer Training School (OTS) as it is known in the Air Force, is the commissioning route generally geared toward college graduates who are entering the U.S. military outside of the military service academies, the (ROTC), or direct commissioning programs.

Each branch offers its own version of this program: the Navy, Army, Marine Corps, Air Force / Space Force and Coast Guard. These programs range from 8.5 to 13 weeks and prepare candidates to lead through military training, leadership development and physical conditioning.

Graduates are commissioned as officers and continue specialized training in their respective fields, serving as leaders in areas such as aviation, intelligence, engineering, logistics, and ground or maritime operations.

I have first-hand experience on the OTS program. I was an Air Force staff sergeant, and had just graduated with a bachelor’s degree using the Tuition Assistance program, when I applied for and was accepted to OTS. I can confirm that the program prepared me well for my new role as a second lieutenant. I spent the next 14 years as an officer, and retired as an Air Force major.

What to Expect at Officer Candidate School

For both OCS and OTS, the main goal is to transform civilians or enlisted members with college degrees into competent, ethical and resilient military officers. The general goal across all branches is to build leadership, physical fitness, military knowledge and command readiness while testing candidates’ discipline, decision-making and adaptability under pressure.

While the core mission is consistent, each service branch structures OCS/OTS differently in terms of length, intensity and focus.

Army OCS

Army OCS is a 12-week course to train civilians with college degrees and enlisted personnel with no more than six years of active service to be Army officers. Enlisted soldiers must earn their degree by the time of their commission.

Conducted at Fort Benning, Georgia, OCS takes place over two phases. Weeks 1 – 6 focus on basic leadership skills, physical training and military instruction. Weeks 7 – 12 emphasize field exercises and practical leadership. Upon successful completion, graduates are commissioned as second lieutenants (O-1) in the United States Army.

You must complete the 10-week Army Basic Combat Training or equivalent military basic skills course before enrolling in OCS.

Non-military college graduates and current military candidates do not compete with each other for available OCS slots. About 65% of all OCS applicants are accepted.

Requirements to Join Army OCS

You must:

• Be a U.S. citizen
• Be between 19 and 32 years old
• Be eligible for a secret security clearance
• Have a bachelor’s degree by the time you commission as an officer

Navy OCS

Officer Candidate School is a primary path for civilians, enlisted sailors who already hold a bachelor’s degree, and some direct commissioning program graduates, who wish to become commissioned Navy officers. Applicants must meet the age, education and physical requirements for the officer community they are applying to.

Once accepted, candidates attend a 13-week training program at Naval Station Newport in Rhode Island. OCS prepares them physically, mentally and professionally for the responsibilities of commissioned service. Upon successful completion, graduates are commissioned as ensigns (O-1) in the United States Navy.

OCS is also used as the final step of commissioning for applicants from several programs, including the Nuclear Propulsion Officer Candidate Program, Direct Commission Officer Programs, and others.

Requirements to Join Navy OCS

You must:

• Be a U.S. citizen
• Be between 19 and 37 years old (depending on your program)
• Have a bachelor’s degree by the time you commission as an officer
• Meet physical/moral standards

Marine Corps OCS

OCS is the most common route for Marines to become commissioned. Located at the historic Marine Corps Base Quantico in Virginia. OCS is a 10-to-12-week pre-commissioned training program for college graduates who want to be Marine Corps officers. The course is broken into five distinct phases, each building on the last to forge Marine leaders ready for the challenges of command.

The goal is to see how you lead under stress, and you’ll spend a lot of time in the field with team-building challenges and high-stakes decision-making.

Upon successful completion of training, you will be commissioned as a second lieutenant (O-1) in the United States Marine Corps

Requirements to Join Marine Corps OCS

You must:

• Have a four-year college degree at the time of commissioning
• Be a U.S. citizen
• Be at least 20 years old (discuss eligibility with an Officer Selection Officer)
• Have strong moral character and leadership potential
• Pass a criminal background check with no felony convictions
• Meet physical and medical fitness standards

Air Force/Space Force OTS

Officer Training School at Maxwell Air Force Base, Alabama offers a path to commissioning for those with a bachelor’s degree, including both civilians, and enlisted airmen and Space Force Guardians.

Both Air Force and Space Force candidates complete the 8.5 -week, five module program that introduces candidates to Air Force and Space Force customs and traditions. Officer Trainees are put through a rigorous curriculum of real-world mission scenarios that challenge them to make strategic decisions and collaborate with others successfully. Those entering specialized professions such as law, medicine or chaplaincy may qualify for a shorter five-week Commissioned Officer Training (COT) track.

Multiple classes are held each year, and graduates are commissioned as second lieutenants (O-1) in the United States Air Force or Space Force.

Requirements to Join Air Force/Space Force OTS

You must:

• Be commissioned before age 35 (some careers have different limits)
• Have a four-year degree from an accredited university
• Hold U.S. citizenship
• Be physically fit and of high moral character
• Pass the Air Force Officer Qualifying Test (AFOQT), when required, for your commissioning path
• Hold additional academic qualifications for some career choices

Coast Guard OCS

The 12-week OCS program is designed for college graduates, prior service members and Coast Guard enlisted personnel. Conducted at the U.S. Coast Guard Academy in New London, Connecticut, the course focuses on leadership and military subjects to prepare candidates for officer roles.

The selection process is highly competitive, requiring applicants to demonstrate proven leadership abilities, relevant professional experience such as project management, and a strong academic background.

The physical and academic curriculum is demanding. In addition to physical training, candidates study navigation, ship operations, seamanship, Coast Guard orientation and leadership. Upon completion, candidates are commissioned as ensigns in the Coast Guard Reserve.

Requirements to Join Coast Guard OCS

You must:

• Be between 21 and 41 years old, but age requirements for different officer programs vary
• Hold U.S. citizenship
• Meet commissioning physical standards, including normal color vision
• Have no more than 12 years of non-Coast Guard active-duty (or 14 years cumulative) military service.