Roles in the Corps

There are hundreds of ways to serve, and every Marine trains in an area of expertise that contributes to the success of our missions.
Whatever their expertise or field of training, Marines are ready to transition from mission to mission at a moment's notice.

Aviation Maintenance Officer

Aviation Maintenance Officers supervise the maintenance of aircraft and aviation equipment. Their duties ensure that all Marine Corps aircraft are ready to fly to support any mission. These officers are in charge of aircraft inspection, managing technical training and administering safety programs. Officers begin at a Marine Aviation Logistics Squadron for 8 to 12 months.

Specialized Training
  • Aviation Maintenance Officer Course
    Naval Aviation School
    Pensacola, FL
    10 weeks
Within the MAGTF

An Aircraft Maintenance Officer (AMO) has the primary duties of organizing and supervising the maintenance and repair of aircraft, aircraft components, and aviation support equipment. Other tasks necessary to accomplish this mission are supervising the scheduling of aircraft for inspection; ensuring the collection and dissemination of maintenance management information; directing technical training and establishing safety programs for maintenance personnel; and directing and monitoring requisitioning, receipt, and allocations of materials and tools.

Beyond Your First Tour

Following your first tour you will either be assigned to a traditional B-billet, or to a billet outside the operating forces but related to your MOS such as recruiting duty or instructor duty at The Basic School. You could also attend a career level school, or pursue an advanced degree through either the Advanced Degree Program or the Special Education Program, followed by another tour in the operating forces.



MAGTF refers to the unique four-part structure that organizes Marine Corps operating forces. This framework brings together Aviation, Ground and Logistics Combat elements under a central Command element. The result is a flexible, combined-arms unit with the capabilities to conduct the Marine Corps' full range of operations, from humanitarian aid and disaster relief to projection of power from the sea. 

Many Roles. One Mission.

The Marine Corps is only as capable as each and every Marine. That's why all Marines have a specific role for which they are optimally trained, in support of the overall mission.



A MEU, or Marine Expeditionary Unit, is the smallest type of MAGTF, often providing the most substantial response in the shortest amount of time. 2,200 Marines that are trained in hundreds of areas of expertise serve on a MEU. Here is the breakdown of a MEU's makeup:

Command Element – Approximately 200 Marines. Responsible for command and control of the entire MEU.

Ground Combat Element – Approximately 1,200 Marines. A Battalion Landing Team that includes three rifle companies, a weapons company, a battery of artillery and platoons of the following: combat engineers, light armored reconnaissance, tanks, Force Reconnaissance and amphibious assault vehicles.

Aviation Combat Element – Approximately 500 Marines. A MEU's ACE is built around a medium tilt-rotor squadron, reinforced by CH-53E heavy lift helicopters, light attack helicopters and Harrier attack jets. The result is a squadron of 25 to 30 aircraft.

Logistics Combat Element – Approximately 300 Marines. Provides supply, transportation, maintenance and additional support for the MEU.


MEUs deploy aboard an Amphibious Ready Group (ARG): Three naval ships specifically designed to provide the Marines with a mobile base of operations. See here what serving aboard a MEU entails.