United States Marine Corps » Officer Rank Structure
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United States Marine Corps Officer Ranks (Ordered By Seniority)
| O-1 |  | Second Lieutenant | 2ndLt | Commissioned Officer | [more] |
| O-2 |  | First Lieutenant | 1stLt | Commissioned Officer | [more] |
| O-3 |  | Captain | Capt | Commissioned Officer | [more] |
| O-4 |  | Major | Maj | Field Officer | [more] |
| O-5 |  | Lieutenant Colonel | LtCol | Field Officer | [more] |
| O-6 |  | Colonel | Col | Field Officer | [more] |
| O-7 |  | Brigadier General | BGen | General Officer | [more] |
| O-8 |  | Major General | MajGen | General Officer | [more] |
| O-9 |  | Lieutenant General | LtGen | General Officer | [more] |
| O-10 |  | General | Gen | General Officer | [more] |
United States Marine Corps Officer Ranks In Order
Officers in the United States Marine Corps are highly trained marines responsible for leading groups of marines in the field and serving as the utmost example of Marine Corps service and ideals.
Marines usually receive an entry-level officer's commission in the Marine Corps as a Second Lieutenant after successfully completing Officer Candidate School. The highest rank in the Marine Corps is General. An Marine Corps officer receives promotions and pay raises based on experience, leadership skills, and number of years served.
This table lists the active officer ranks in the United States Marine Corps in increasing order of senority. Choose any rank for detailed information including duties and leadership responsibilities, Marine Corps officer pay details, officer rank insignia, and more.
Military Discounts & Benefits for Marines:
In addition to basic pay and allowances, active-duty marines, veterans, and even their families are eligible for hundreds of discounts and additional benefits offered by organizations and private companies like JetBlue 
, United Airlines , Verizon , and hundreds more.