Military Ranks

Main article: Enclave of the United States Armed Forces organization

Known ranks in the Enclave

 * Troop, Soldier, Guard, Private; Guards at Camp Navarro were called Soldiers by senior staff,
 * Private First Class - described as pfc-tech, grade X, a soldier in a duty uniform (found at Navarro dialogue files: Cctech.msg)
 * Sergeant, the only appearing NCO position, eg.:
 * Sgt. Bracks - in charge at the Enclave Patrolmen checkpoint 3, destroyed in Mariposa Military Base,
 * Sgt. Dornan - drill Sergeant at Camp Navarro, the only sergeant there (reffered just as a "Sarge" by other personnel), had some insignia on the breastplate (like other military personnel there),
 * Sgt. Granite - leader of the Enclave Control Company squad, had Sergeant's chevrons on his shoulder,
 * on the oil rig: guards were floating "nothing to report Sarge", Curling was going to complain to some Sergeant,
 * Captain, eg. Cap. Pickard, in charge at the Enclave Patrolmen checkpoint 1, destroyed in Mariposa Military Base; the highest rank known the Enclave Patrolman (notice: in the contemporary US Army a Captain typically commands company-size unit, 62 to 190 soldiers),
 * Lieutenant Colonel, eg. Lt. Col. dr. Charles Curling, United States Chemical Corps head, reporting to the Cabinet (notice: in the contemporary US Army a Lieutenant Colonel typically commands a battalion-sized unit, 300 to 1000 soldiers),
 * Colonel, eg. Col. Sanders, CO for Mariposa Military Base excavation, the highest rank known officer, the highest rank known officer present on the field also, subordinated to the CHQ then (notice: in the contemporary US Army a Colonel typically commands brigade-sized units, 3000 to 5000 soldiers).

Undefined ranks Enclave military staff
There are also 2 positions at Camp Navarro with undefined rank:
 * the Base Commander, the superior officer there, a long-serving soldier (refered as "old man" by his door guard, but described as "she" by the game engine); at least Base Commander should have the lowest officer's rank at the Enclave armed forces; under his command was 39 crew outpost, which was not only an ordinary platoon equivalent, but independent unit on the main land also (notice: (1) in contemporary US Army the lowest officers grade is Second Lieutenant, that usually commanding platoon size units; (2) the lowest known officers grade in the Enclave armed forces was Captain; (3) Camp Navarro Base Commander responsibility was greater then ordinary platoon leader),
 * the Quartermaster.

Known pre-war US Armed Forces ranks
The Enclave of the United States of America was legal continuation of the pre-war USA. Known pre-war US Armed Forces ranks were also:
 * Private, eg. Private Dobbs and Private Callow, stored at the Sierra Army Depot,
 * Corporal, eg. Corp. Dixon, serving at the Sierra Army Depot, or Corp. Armstrong of the Great Midwest Commonwealth 4th or 13th Armored Infantry Division (van Buren demo character),
 * Sergeant, eg. Sgt. Platner, serving at the Mariposa Military Base in 2077 and Sgt. Dennis Allen (in year 2134, 57 years after the War, Brotherhood of Steel member in fact),
 * Captain, eg. Cap. Roger Maxson, serial number 072389, serving at the Mariposa Military Base in 2077 as security guard (MP) there, an active commanding officer there following the untimely death of Colonel Robert Spindel,
 * Major, eg. Maj. Barnett, serving at the West Tech facility,
 * Colonel, eg. Col. Robert Spindel, in charge at the Mariposa Military Base, or Col. Green, the head of security and operations at the Los Alamos Nuclear Testing Facility (experience level 15 as a ghoul, van Buren character),
 * General, eg. Gen. Clifton, in charge at the Sierra Army Depot in 2077.

The NCR army ranks
According to one of Fallout 2 endings shaken by the assassination of Vice-President Carlson, right-wing elements seize control of the Congress and set the New California Republic on the path to military rule. Eventually the survivors of the Enclave find a home in the ranks of NCR.

It is not certain, if the NCR got under military rule after destruction of the Enclave and if the survivors of the Enclave found a home in the ranks of NCR. At least one of them, Arcade Grannon, joined Followers of the Apocalypse however. It is known, that the NCR army mimicked some pre-war armed forces ranks also. During long war against Brotherhood of Steel following destruction of the Enclave in the NCR army were present such ranks as:
 * Corporal, eg. Corp. Christina Royce (position mentioned by Chris Avellone only, in fact as: "Corporal, the NCR lieutenant"),
 * Sergeant, eg. Sgt. Larsen, leader of the team escorting the NCR scientists to the Boulder (experience level 8),
 * Lieutenant, eg. Lt. Pierce (Pierce’s position mentioned only by Chris Avellone),
 * Captain, eg. Cap. Pierce (experience level 12), leader of the team escorting Gen. Coleridge, or Cap. Davidson (experience level 25),
 * Major, eg. Maj. Briggs, the 5th Engineering Company CO in 2247 (experience level 12) or Maj. Jack Fleming, the commander of the Hoover Dam NCR troops and governor Dodge's right hand man (experience level 15),
 * General, eg. Gen. Coleridge (experience level 20).

Consolidated ranks list

 * Private,
 * Corporal (presence confirmed in pre-war armed forces and mentioned by Chris Avellone),
 * Sergeant,
 * Lieutenant (mentioned by Chris Avellone only),
 * Captain,
 * Major,
 * Lieutenant Colonel,
 * Colonel,
 * General (presence confirmed in pre-war armed forces only, however Col. Sanders had to be subjugated to somebody in CHQ).