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As a candidate and an actual Marine Officer, you will consistently be evaluated on your ability to lead Marines.

When you begin your process of pursuing a commission, consider what your values are and what actions embody those. When you meet with your Officer Selection Officer, Blue and Gold Officer, or approach your Chain of Command, be prepared to discuss what you believe and how you live that every day.

As a candidate, Midshipmen, and Marine, you will receive evaluations on your performance. Factors like judgment, decision making, initiative, setting the example, and more are critical factors used in determining your fitness for a commission.

You will be evaluated not only on your leadership of subordinates, but of peers. Your peers and evaluators will judge your character, moral integrity, and overall performance. Prepare to have every action scrutinized.

Be honest and unafraid to uphold the standard. The fact you are the type of person even considering becoming a Marine Corps Officer likely means you are already different than most of your peers at whatever your current stage of life.

Relax and live your life in line with your values. The rest will sort itself out as you navigate the process.


The Marine Corps is built on discipline.  Being physically fit is to master oneself. Through your commissioning program, TBS, and into the fleet, your Physical Fitness will be paramount. 

We have broken down the physical fitness requirements you will want to strive for in order to earn your commission at our Physical Preparation page.

The importance of being physically fit before you approach your OSO or shipping to OCS cannot be overstated.


As Officers, anything you say to a Marine junior in rank is construed as an order. Written orders are the most significant.

The Military standard format is known as the 5 Paragraph Order

An introductory orientation section, followed by:

  1. Situation

  2. Mission

  3. Execution

  4. Administration and Logistics

  5. Command and Control


This will be one of the most important skills you will be evaluated on at OCS and TBS, so getting familiar early will set you up for success on your journey.

To master the Five Paragraph Order, click here.

Key Training Events
Sergeant Instructors
Pre-OCS Checklist
Basic Daily Routine
Eating at OCS
Living in the Squadbay
5 Paragraph Order
Getting Ready
What Can I Bring with Me?
Staying in Touch
PT Plans
OCS Knowledge
Knowledge Check
Family Day
Pro Tips
The Rumor Mill
Counseling Call
Honor Grad Principles
Reading Materials
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