The U.S. Navy has four active admiral ranks in the Navy today: Rear Admiral (Lower Half) at pay grade O-7, Rear Admiral (Upper Half) at O-8, Vice Admiral at O-9, and Admiral at O-10. A fifth rank, Fleet Admiral, still exists in law but has not been awarded since 1945. Congress caps the total number of active-duty Navy flag officers at 150, which makes reaching any of these ranks one of the most selective promotions in the military.1Office of the Law Revision Counsel. 10 USC 526 – Authorized Strength: General Officers and Flag Officers on Active Duty
The Four Ranks at a Glance
Each admiral rank corresponds to a specific pay grade, a number of stars, and a set of typical assignments.
Rear Admiral (Lower Half), O-7, one star. The entry point into flag rank. Officers at this level typically command amphibious groups, carrier strike groups, or expeditionary strike groups, or serve as deputies to larger commands. The abbreviation on official documents is RDML.
Rear Admiral (Upper Half), O-8, two stars. Abbreviated RADM. These officers command carrier strike groups or numbered task forces and hold senior staff positions across the Navy.
Vice Admiral, O-9, three stars. Abbreviated VADM. Vice Admirals lead major naval commands, serve as deputy chiefs of naval operations, or head joint task forces.
Admiral, O-10, four stars. Abbreviated ADM. This is the most senior active rank. Admirals command regional combatant commands, serve as Chief of Naval Operations, or hold the position of Chairman of the Joint Chiefs of Staff.2Military.com. Navy Ranks: A Complete Guide to Enlisted and Officer Ranks
Fleet Admiral: The Dormant Five-Star Rank
Fleet Admiral sits above all four active ranks as a five-star position, but it exists only on paper today. Congress created the rank in December 1944 for World War II, and only four officers ever held it: William Leahy, Ernest King, Chester Nimitz, and William Halsey. Halsey was the last to receive the appointment, taking the oath on December 11, 1945.3Naval History and Heritage Command. Halsey, William Frederick The original legislation provided that the rank would expire six months after the President proclaimed the end of hostilities, and Congress has never reactivated it.2Military.com. Navy Ranks: A Complete Guide to Enlisted and Officer Ranks No serving officer holds five stars today.
How to Tell the Ranks Apart
The quickest way to identify an admiral’s rank is to count stars. Flag officers wear metal stars on shoulder boards, collar devices, and caps, with each rank adding one: one for a Rear Admiral (Lower Half), two for a Rear Admiral (Upper Half), three for a Vice Admiral, and four for an Admiral.2Military.com. Navy Ranks: A Complete Guide to Enlisted and Officer Ranks
On dress blue and dress white uniforms, admirals also wear gold sleeve lace on the cuffs, with the number and width of stripes increasing by rank. The tradition dates to the 1860s, when the Navy first established sleeve markings for flag officers. Stars on the shoulders and collar remain the most reliable indicator at a glance.
Equivalent Ranks in the Other Services
Navy admiral ranks map directly to general officer ranks in the Army, Air Force, Marine Corps, and Space Force. The pay grade is identical across all branches, so an O-9 Vice Admiral holds the same seniority as an O-9 Lieutenant General.4Department of War. U.S. Military Rank Insignia
- O-7: Rear Admiral (Lower Half) equals Brigadier General
- O-8: Rear Admiral (Upper Half) equals Major General
- O-9: Vice Admiral equals Lieutenant General
- O-10: Admiral equals General
The equivalency matters in joint commands, where officers from different branches serve together. Seniority between an Army Lieutenant General and a Navy Vice Admiral is determined by date of rank rather than branch.
Admiral Pay in 2026
Military basic pay for flag officers follows the standard Department of Defense pay tables, but Congress caps basic pay for grades O-7 through O-10 at the Level II Executive Schedule rate. For 2026, that ceiling is $18,999.90 per month, or roughly $228,000 per year.5DFAS. 2026 Basic Pay: Officers6OPM. Salary Table No. 2026-EX
Because of the cap, a Vice Admiral and an Admiral take home the same basic pay once both have hit the ceiling. A newly promoted one-star Rear Admiral (Lower Half) with 20 years of service earns about $16,818 per month before reaching the cap at higher longevity steps.5DFAS. 2026 Basic Pay: Officers Basic pay is only part of the picture. Admirals also receive a tax-free housing allowance, a subsistence allowance, and a personal money allowance meant to offset the unusual expenses that come with senior leadership duties like hosting foreign dignitaries and attending official functions.
How Officers Reach Flag Rank
The path to Rear Admiral (Lower Half) works differently from the path to the three- and four-star ranks above it.
Promotion to Rear Admiral (Lower Half)
Before an officer can be considered for O-7, federal law requires designation as a “joint qualified officer,” meaning the officer has completed a joint duty assignment working alongside other military branches.7Office of the Law Revision Counsel. 10 USC 619a – Eligibility for Consideration for Promotion: Designation as Joint Qualified Officer Required Before Promotion to General or Flag Grade; Exceptions A narrow exception applies to officers currently serving in a joint assignment with at least two consecutive years of joint service and the required professional military education.
The Secretary of the Navy convenes a promotion selection board of senior flag officers to review every eligible captain’s record. The board looks for officers “best qualified” to meet Navy needs, weighing leadership potential, progression in billet complexity, and the ability to lead large organizations. Officers the board selects are then nominated by the President and must be confirmed by the Senate before the promotion takes effect.8Office of the Law Revision Counsel. 10 USC 601 – Positions of Importance and Responsibility: Generals and Admirals
Promotion to Vice Admiral and Admiral
The three- and four-star ranks work differently. Officers are not promoted into these grades through a traditional selection board. Instead, the President designates specific positions as requiring a Vice Admiral or Admiral, then appoints an officer to fill that role. The appointment requires Senate confirmation and lasts only as long as the officer holds that particular position.8Office of the Law Revision Counsel. 10 USC 601 – Positions of Importance and Responsibility: Generals and Admirals When a four-star Admiral finishes a tour as a combatant commander, the rank reverts unless the officer is assigned to another four-star billet. The rank is tied to the job, not the person.
Mandatory Retirement Limits
Beyond the 150-officer cap, federal law imposes retirement timelines based on years of commissioned service, not age. The clock varies by rank:
- Rear Admiral (Lower Half), O-7: must retire after 35 years of active commissioned service or five years in grade, whichever comes later.
- Vice Admiral, O-9: must retire after 38 years of active commissioned service.
- Admiral, O-10: must retire after 40 years of active commissioned service.
These limits are set by statute, so the Secretary of Defense cannot waive them without Congressional action.9Office of the Law Revision Counsel. 10 USC 636 – Retirement for Years of Service: Regular Officers in Grades Above Brigadier General and Rear Admiral (Lower Half) The practical effect is that admirals typically serve shorter tenures at higher ranks. A four-star Admiral who reached that grade after 34 years of service has at most six years before mandatory retirement, and most rotate out of their billets well before hitting that wall.