Fleet Admiral is the highest commissioned officer rank in the UNSC Navy, although promotion to this rank is restricted to times of war. It is equal in rank to General of the Air Force in the UNSC Air Force, and General of the Army in the UNSC Army. Fleet admirals are generally well experienced and battle-hardened naval commanders.
|UNSC Defense Force commissioned officer ranks|
|Air Force:||2nd Lt||1st Lt||Capt||Maj||Lt Col||Col||Brig Gen||Maj Gen||Lt Gen||Gen||GOAF|