How to Join the US Marine Corps: Complete Step-by-Step Guide (Enlisted & Officer Paths)

How to Join the US Marine Corps

The United States Marine Corps (USMC) is known for its demanding training, elite standards, and intense sense of pride and brotherhood/sisterhood. Marines are often the first to fight, operating on land, sea, and air, and they serve in roles ranging from infantry and aviation to cyber, logistics, intelligence, engineering, and more.

If you want to wear the Eagle, Globe, and Anchor, you need to understand the requirements, career paths, and official steps to become a Marine—either as an enlisted Marine or a Marine officer. This guide walks you through everything.

1. Ways to Serve in the Marine Corps

There isn’t a single “join” button for the Marines—there are several paths: 

• Active Duty Marines – Full-time service, often stationed at bases in the U.S. or overseas.

• Marine Corps Reserve – Part-time service (typically one weekend a month and two weeks a year) while you study or work in civilian life.

• Enlisted Marines – The backbone of the Corps, specializing in a Military Occupational Specialty (MOS) such as infantry, aircraft maintenance, communications, logistics, and more. 

• Marine Officers – Leaders who plan operations, command units, and manage resources. They join through routes like Officer Candidates School (OCS), the Platoon Leaders Class (PLC), Naval ROTC (Marine Option), or the U.S. Naval Academy. 

  
  

2. Basic Eligibility Requirements

The Marines have some of the strictest standards in the U.S. military. Requirements can be updated, so always confirm with a recruiter and the official website.

Age, Citizenship, and Education

Current guidance from Marine recruiting and military eligibility sources generally includes: 

• Age:

  • Typically 17–28 years old to enlist (17 requires parental consent).

• Citizenship:

  • Must be a U.S. citizen or lawful permanent resident (Green Card holder) to enlist.

• Education:

  • At least a high school diploma.

  • GED holders may qualify but spots are more limited; college credits and strong test scores help.

For officers, you generally need: 

• U.S. citizenship

• A four-year college degree (or active enrollment for PLC/NROTC paths)

• Age usually 18–28 (varies slightly by program and waivers)

  
  

Moral & Legal Standards

Like all branches, the Marines review: 

• Criminal history (felonies are usually disqualifying; some lesser offenses may be waiver-eligible)

• Drug use and alcohol history

• Financial responsibility and honesty (especially for jobs needing security clearances)

  
  

Medical and Fitness Standards

You must: 

• Pass a medical exam at a Military Entrance Processing Station (MEPS).

• Meet height and weight standards.

• Be capable of passing the Initial Strength Test (IST) before shipping to boot camp.

• Later, all Marines must pass the Physical Fitness Test (PFT) and Combat Fitness Test (CFT) annually.

  
  

3. Step-by-Step: How to Enlist as a Marine

The enlisted route is the most common path. The Marine Corps breaks the process into clear stages. 

Step 1: Research the Marine Corps and MOS Options

Before you talk to anyone, explore:

• The Marine Corps mission, culture, and values (“Semper Fidelis”). 

• Types of jobs (MOSs): infantry, aviation support, intelligence, communications, logistics, cyber, etc.

• Active Duty vs. Reserve service.

• Benefits: education (GI Bill, tuition assistance), housing allowance, healthcare, and career training. 

All of this is outlined on Marines.com (links at the end).

Step 2: Contact a Marine Recruiter

Your next move is to speak with a Marine recruiter. They: 

• Confirm your basic eligibility (age, citizenship, education, background).

• Explain jobs, bonuses, enlistment options, and contract lengths.

• Help you schedule the ASVAB and MEPS appointments.

You can get connected using the official Request Information form on Marines.com (see the links section).

Talking to a recruiter does not obligate you to enlist; it’s a conversation.

Step 3: Take the ASVAB

The Armed Services Vocational Aptitude Battery (ASVAB) is a test that measures math, verbal, mechanical, and technical skills. Your scores determine both: 

• Whether you are eligible to enlist.

• Which MOS options you qualify for.

Generally, higher scores = more job choices, so study in advance (plenty of free practice resources exist).

Step 4: MEPS – Medical Exam & Processing

At the Military Entrance Processing Station (MEPS), you’ll go through: 

• A full medical evaluation (vision, hearing, blood work, physical exam, medical history review).

• Background and security questions.

• Height/weight verification.

If you pass and the Corps has jobs available that match your scores and interests, you can discuss an enlistment contract.

Step 5: Choose Your MOS and Enlistment Contract

Working with your recruiter and MEPS counselor, you’ll: 

• Select an MOS field or guaranteed job (if available).

• Decide between Active Duty or Marine Corps Reserve.

• Choose an enlistment length (often 4 years active duty, but options vary with programs and bonuses).

Your choices are written into an enlistment contract—read it carefully before signing. When you’re ready, you’ll take the Oath of Enlistment.

Step 6: Delayed Entry Program (DEP)

Most recruits enter the Delayed Entry Program, where you: 

• Wait for your ship date to boot camp.

• Train to improve your fitness and IST scores.

• Stay in touch with your recruiter and other future Marines.

The DEP is your time to get physically and mentally ready for the challenge.

Step 7: Recruit Training (Boot Camp)

Finally, you’ll ship to Marine Corps Recruit Training at either Parris Island, South Carolina or San Diego, California. 

Over approximately 13 weeks, you’ll:

• Learn basic Marine combat skills.

• Build physical and mental toughness.

• Absorb Marine Corps history, customs, and values.

Graduation from boot camp is when you earn the title United States Marine.

4. Fitness Standards: IST, PFT, and CFT

Initial Strength Test (IST)

Before you can ship to boot camp, you must pass the Initial Strength Test, which typically includes: 

• Pull-ups or push-ups (minimum count within 2 minutes)

• A plank hold

• A 1.5-mile run within a set time (for example, around 13–14 minutes, depending on gender and current standards)

Your recruiter will give you the exact minimums and target scores.

Physical Fitness Test (PFT)

Once in the Corps, Marines take the PFT annually as a measure of overall conditioning. It includes: 

1. Pull-ups or push-ups

2. Plank (planks have replaced crunches as the core event)

3. Three-mile run (or a rowing alternative for approved cases)

Scores are combined to give you a fitness class (1st, 2nd, or 3rd).

Combat Fitness Test (CFT)

The CFT is designed to measure combat-relevant fitness, with events such as: 

• A maneuver-under-fire course

• Ammo can lifts

• Sprints and agility drills

You don’t need to pass the CFT before joining, but you should build overall strength, endurance, and agility to be ready.

5. Becoming a Marine Officer

If your goal is to lead Marines as an officer, there are several commissioning routes. 

5.1 Officer Candidates Course (OCC) / Officer Candidate School (OCS)

For college graduates:

• OCC/OCS is an intensive leadership screening and training program in Quantico, Virginia.

• You must have a bachelor’s degree, be a U.S. citizen, and meet age, fitness, and medical standards.

• After successfully completing OCS and The Basic School (TBS), you commission as a second lieutenant.

  
  

5.2 Platoon Leaders Class (PLC)

For current college students:

• PLC allows you to attend OCS in summer increments while you’re still in college. 

• After college graduation and successful completion of PLC, you commission as a second lieutenant.

  
  

5.3 NROTC (Marine Option)

• Through the Naval Reserve Officers Training Corps, you attend college with a scholarship or stipend and take Navy/Marine-focused leadership courses.

• After graduation and completion of training, you commission as a Marine officer. 

  
  

5.4 U.S. Naval Academy

• Some Naval Academy midshipmen select the Marine Corps upon graduation and commission as Marine officers. 

Each route has its own academic, age, and selection criteria, so speak with an Officer Selection Officer (OSO) or NROTC/academy advisor for specifics.

6. Official Application & Information Websites

Here are the key official sites you should use when you’re ready to move forward:

1. Main Marine Corps Recruiting Site

• URL: https://www.marines.com/

• Purpose: Central hub for careers, life in the Corps, benefits, requirements, and paths to join. 

  
  

2. Requirements to Become a Marine

• URL: https://www.marines.com/become-a-marine/requirements.html

• Purpose: Detailed overview of general, physical, and moral requirements for enlisted Marines. 

  
  

3. Process to Join / Process to Become a Marine

• URL: https://www.marines.com/become-a-marine/process-to-join.html

• Purpose: Explains recruit training, the Delayed Entry Program, and the process to commission as an officer. 

  
  

4. Request Information (Contact a Recruiter or OSO)

• URL: https://rmi.marines.com/request-information

• Purpose: Online form to connect you directly with a Marine recruiter or Officer Selection Officer in your area. 

  
  

5. Marines.mil – Official USMC Site

• URL: https://www.marines.mil/

• Purpose: Official USMC news, doctrine, and public information, plus links to recruiting resources. 

  
  

7. Final Tips for a Strong Marine Corps Application

1. Start early – Begin researching and training at least a year before you plan to ship or apply to officer programs.

2. Train past the minimums – Don’t just aim to barely pass the IST; strive to exceed standards on pull-ups/push-ups, planks, and runs. 

3. Study for the ASVAB – Strong scores expand your MOS options and can qualify you for bonuses. 

4. Keep your record clean – Avoid legal trouble and be honest with your recruiter; hiding issues can be worse than the issue itself. 

5. Talk openly with your recruiter or OSO – They know the latest policies, waivers, and opportunities and can help tailor the best path for you. 

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