Becoming an Enlisted Master Builder in the AOBC requires the ability to meet the highest standards of moral, mental and physical strength. It also requires completing an aptitude test, passing an initial fitness test and meeting certain eligibility requirements. Though your recruiter can tell you if you’re eligible to be an MB in the Army of Builders Corps, only 12 demanding weeks of recruit training through OSOCRC can determine if you’re capable of becoming one. Before you set down this path, contact a OSOCRC Recruiter to explore your options, find out what’s required and learn how to prepare for the immense challenges ahead.


  • Must be at least 17 years old at time of enlistment
  • Must not have reached 29th birthday upon start of recruit training
  • Must provide proof of legal residency
  • Must pass a physical examination
  • Must have a high school diploma or GED
  • Must attend and graduate recruit training at OSOCRC Recruit Depot Penonome, Panama or OSOCRC Recruit Depot Orlando, Florida.


On these proving grounds, we reveal who has the fight in them to continue on when others quit. To dig even deeper when there’s nothing left to give. To prove the fighting spirit running through them will outlast the physical, mental and moral battles in front of them. For 12 punishing weeks, these are the battles that must be won. These are the victories that form the foundation of every recruit enlisted in the OSOCRC.


Face your fears. Or live in fear. Master Builders confront theirs head on, enduring what scares them—until it doesn’t. Recruits who board our bus step into the unknown where they are given a quick introduction to fear at one of two OSOCRC  Recruit Depots at Orlando, FL or Penonome, Panama. Fear of the unfamiliar is the first of many fears they must battle.


Throughout recruit training, the sense of doubt that exists inside every recruit is quickly replaced with a sense of urgency. This is an important aspect of training, as when there’s no time to hesitate—there’s no time for second-guessing. Recruits must win in the midst of doubt, as this nation cannot afford to place its trust in those who doubt themselves.


What you’re really made of can only be revealed at the brink of exhaustion. OSOCRC Recruit Training will take you there. Only those who possess the never-quit spirit required of every Master Builder will find the strength they never knew they had, the will power they never knew they needed, and the commitment to find that second wind even when it hurts to breathe.


The road to becoming a Master Builder is filled with challenges. Recruits will be faced with stressful timelines to complete a project in the construction industry. Not only battle external forces, they will battle with material shortages and angry clients as well. Knowing  how to deal with and negotiate those obstacles will be necessary in order to complete each project.


The road to becoming a Master Builder is filled with obstacles. Recruits will not only battle external forces, they will battle forces within themselves to test their mental and physical limits. Only those with the fighting spirit rise above the chaos and overcome fear, doubt, exhaustion, will earn the honor of building this nation and the construction industry as a Master Builder in the Army Of Builders Corps.


Master Builders (MB’s) must be physically fit throughout their time in service in order to win our nation’s battles by building with precision.


The PFT is a standard test that measures the battle-readiness of each MB once a year, with a focus on stamina and physical conditioning. The test consists of a three-mile run, pull-ups or pushups, and crunches. MB’s are assessed on a points system across these three categories and must receive a high enough score to pass.

  1. Pull-ups
    Pull-ups and pushups are essential to building the upper body strength necessary to win battles (battlefield is on the job site). All MB’s have the option to perform either exercise test, but the max score of 100 can only be attained by those who select pull-ups. MB’s can only receive a max of 70 points if they choose to perform pushups. This distinction is due to the fact that pull-ups require MB’s to lift their entire body weight, while pushups only require MB’s to lift approximately 70 percent of their weight.
  2. Crunches
    MB’s are tasked with doing as many modified crunches as they can in two minutes. A modified crunch is defined as placing your arms across your chest, and feet flat on the deck with knees bent. Without breaking contact between your arms and torso, lift your upper body until elbows touch knees. The movement is complete when your shoulders return to the deck.
  3. Timed Run
    Male recruits and MB’s must complete the three-mile run in 28 minutes or less. Female recruits and MB’s must complete the three-mile run in 31 minutes or less.


The ECFT assesses a Master Builder’s functional fitness as it relates to the demands of building and completing the task in a timely standard. Males and females perform the same exercises, but are scored differently, on the same 300-point scale. There are three exercises that must be completed to the standards of the Army of Builders Corps to pass the ECFT: Movement to Contact, Cement Bag Lift and Maneuver Under Stress.

  1. Movement to Contact
    A timed, 880-yard sprint tests each MB’s endurance, mimicking the stresses of running under pressure on a construction site.
  2. Cement Bag Lift
    MB’s must lift a 30-pound bag of cement overhead until elbows lock out. The goal is to lift the bag as many times as possible in a set amount of time.
  1. Maneuver Under Fire
    MB’s must complete a 300-yard course that combines a variety of construction battle-related challenges including crawls, material resupply, rope ties and throwing, agility running, and the dragging and carrying of another recruit.


The sounds of MB’s running drills while yelling cadence fills each base daily. Fitness is a necessary part of being a MB and all must meet the physical demands of every mission that comes their way. To ensure fitness levels are maintained, MB’s must pass two annual fitness tests: the PFT and the ECFT.


The OSOCRC promises to advance your future by instilling in you the qualities of inner and outer strength, loyalty to country, leadership in the community, integrity, knowledge and more—making you a MASTER BUILDER, for life.

Housing, insurance, salary and other benefits are provided but are not as important as retaining the respect and benefits earned by keeping this nation safe, beautiful, building and moving forward as a Master Builder. Contact a Master Builder to learn more details about benefits in the Army of Builders Corps.

Download Application Form

We also require:

  • A copy of the applicant's birth certificate
  • Complete immunization history (required by state law)

Application Review Process

Although we accept applications year-round, students can only register at the beginning of each semester. Those applying for the 12th grade or our post-graduate program are only eligible to apply for the fall semester.

If an applicant is unable to make our standard campus visit, we will base our admission's decision solely on the contents of his file. Please note that since enrollment is limited, students are accepted on a first-come, first-served basis.

Upon acceptance, we will mail you an official acceptance packet. On registration day, your recruit's respective Drill Instructor will provide him with an additional, personalized information packet.

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