Enclave Department of the Army

''Duty, (cough) honor... courage... Semper Fiiiii...''

Horrigan's last words

Main article: Enclave

Overview

 * According to Fallout Bible the Enclave army was composed of hundreds of soldiers armed with advanced versions of Power Armor and guns, that rival the Brotherhood of Steel, while according to dr. Charles Curling there were thousand inhabitants on the oil rig. It seems the Enclave army consisted of 200-900 soldiers, which was 20-90% of whole population (notice: contemporary US Army battalion has 300 – 1000 soldiers),
 * It seems also a company was probably the highest grade unit organization (the only known example - Enclave Control Company). It is not certain how much crews had the Enclave company, however the smallest contemporary US Army company consists of 62 crews.

Ranks
Main article: Ranks in the United States Armed Forces and its descendants


 * Private: also: Troop, Soldier, Guard; Guards at Camp Navarro were called soldiers by senior staff (also: Private First Class - described as pfc-tech, grade X, a soldier in a duty uniform, found at one of Navarro dialogue file Cctech.msg)
 * Corporal (presence confirmed in pre-war armed forces and mentioned by Chris Avellone in connection with the New California Republic army),
 * Sergeant, the only encountered by Chosen One 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,
 * some Sergeants on the oil rig: guards were floating "nothing to report Sarge", Curling was going to complain to some Sergeant,
 * Lieutenant (mentioned by Chris Avellone in connection with NCR army only),
 * Captain - the only example known was Cap. Pickard, in charge at the Enclave Patrolmen checkpoint 1 in Mariposa Military Base, K.I.A. there; the highest rank known the Enclave Patrolman also (notice: in the contemporary US Army a Captain typically commands company-size unit, 62 to 190 soldiers),
 * Major (presence confirmed in pre-war armed forces and in NCR army),
 * Lieutenant Colonel - the only known example was Lt. Col. dr. Charles Curling, head of the United States Chemical Corps, reporting to the Cabinet (notice: in the contemporary US Army a Lieutenant Colonel typically commands a battalion-sized unit, 300 to 1000 soldiers),
 * Colonel - the only known example was 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).
 * General (presence confirmed in pre-war armed forces and in NCR army only, however Col. Sanders had to be subjugated to somebody in CHQ).

Undefined ranks military staff:
 * There are 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.
 * The United States Chemical Corps scientists had no military ranks. The only exeption was Chemical Corps head with Lt. Col. rank. However they were mentioned in Fallout Bible as officers.

The Enclave of the United States of America was legal continuation of the pre-war USA. According to one of Fallout 2 endings - if right-wing elements seized control of the NCR Congress and set the New California Republic on the path to military rule, eventually the survivors of the Enclave would find a home in the ranks of NCR. It is not certain, if 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 also, that NCR army mimicked some pre-war armed forces ranks.

Laws
According to United States Constitution the President shall be Commander in Chief of the Army and Navy of the United States (Article Two, Section 2, Clause 1). According to Fallout Bible:
 * Presidential Directives could concern armed forces conditioning and testing programs (known example - Horrigan's conditioning).
 * Presidencial decisions could concern major importance scientific projects connected with military actions (known example - decision to go take the Vault 13 inhabitants as test subjects for the Project, which scrambled the vertibird unit),
 * Presidential Orders could concern military research and data protection (known example - power armor research).

Emergency Defensive Systems
The President was in charge with Emergency Defensive Systems. It is possible, that this was one large defensive system together with the oil rig external defenses. At least 15 security turrets, that wielding heavy dual .223 miniguns with 800 pieces of ammunition each (at least 12k pieces of ammunition together), were possible to encounter on the known oil rig levels. It was part of counterinsurgency procedure, controlled by the President and accessible from Data Plex 2000 SmarTerminal at the Entry Level.

Security status levels
Possible security turrets status level was:
 * Armed Alert
 * Normal
 * Deactivated Maintenance

Security override options
Security override options were controlled by the President:
 * Counter Insurgency – in the event of armed rebellion, Presidential Security keycard allows defensive systems to be turned on all, previously loyal, but now threatening units within an area. Defensive systems were programmed to attack most dangerous foe first. Operational - Entry levels only.
 * Emergency Defensive System Shutdown – temporarily shuts down active security systems on a level by level basis. Shutdown starts deep diagnostic.

Main command and Central Headquarters
On the one hand it could be the same thing, on the other hand CHQ could be main command together with its supportive unit (notice: in van Buren "central headquarters" term was used for Fort Abandon, when it was seized by renegade NCR forces for its main base).
 * Main command – name used on PoseidoNet by the Enclave troop,
 * CHQ – col. Sanders’es holodisc addresse.

Features:
 * Supervised by the President or by member of his Cabinet possesing Secretary of War powers (if appointed).
 * Its superior powers concerning United States Chemical Corps are not certain in light of fact, that dr. Curling reported about the Project directly to the Cabinet.
 * Col. Sanders was subjugated to CHQ, when was overseeing the Mariposa Military Base excavation.
 * Main command uses the Enclave Vault-Research Control station connected to PoseidoNet.

Internal security
Military police. Internal counterpart for externally used verti-assault squads. Subordinated to main command.

Engineering
According to Fallout Bible they are called "construction crews". It is not certain, if it is service branch, unit, subunit or civilian part of the Enclave. Its known activities were mainly connected with civil engineering, eg.:
 * preparing Navarro facitity for military and vertibird purposes (area of the Navarro Refinery, prewar Poseidon facility),
 * excavation of Mariposa Military Base (it is not certain who took care of explosives during Mariposa Military Base excavation, however it was engineering duty also).

Air forces support facilities
Staffed by technicians and military mechanics. Two kind of specialists were present:
 * Air traffic control (notice: 2 crew in Camp Navarro - military technician and technician in lab coat),
 * Communication (notice: 2 crew in Camp Navarro - technicians in lab coats),
 * Maintenance (notice: 3 soldiers-mechanics in Camp Navarro), however vertibird maintenance do not have to be subjugated directly to CHQ (eg. there were verti-assault unit and “flyboys”).
 * military specialists - mechanics and technicians (uniformed soldiers, their uniforms look like Leather Armors, mechanics in greased uniforms),
 * 1st and 2nd grade technicians, uniformed with lab coats, like US Chemical Corps members.

Vertibird transport
Hypothetical transport unit with other then verti-assault duties. Staffed by so called “flyboys”. "Flyboys" were mentioned by Navarro vertibird mechanic Raul, but they were not encountered there.
 * There were 3 undestroyed aircrafts encountered in ‘’Fallout 2’’- 2 at Camp Navarro and 1 in New Reno.
 * One of vertibirds in Navarro was probably inoperable [notice: according to the Enclave main command inoperable was something called “unit three”].
 * Total vertibirds number is unknown:
 * it should be enough to transport even 1000 Vault 13 dwellers from Vault 13 to the oil rig during in a short time and to keep stand-by at least one verti-assault squad,
 * there was not enough aircrafts to propel FEV over the mainland (Chosen One’s conclusion),
 * the vertibird number should be adequate to needs and maintenence possiblities of a few hundreds soldiers army.
 * Navarro vertibirds purpose is unknown - there was no Mr. Handy bots, no verti-assault squad or any other "flyboys".
 * Vertibird range was at least 175 miles distance between the oil rig and Navarro. Accessible were Klamath, Redding, Gecko, New Reno and Vault 13 also. Other transport issues were:
 * service for Mariposa Military Base excavations,
 * emptying of Arroyo,
 * deathclaws transfer to Vault 13,
 * transport provided for Secret Service operations – huge Horrigan and 2 or 5 other troops (3 known events),
 * barter with Salvatore family, possible everyday, performed by vertibird crew consisted of 2 women soldiers equipped with Pancor Jackhammer and unarmed Mr. Handy (notice: Mr. Handy accompanied guards crashed in Klamath canyon also). According to Chosen One New Reno run was not pleasant duty - probably because Enclavers don't like the mainland (according to floating texts).

IT branch
Staffed by the Enclave technicians (as well as Navarro power generator). Notices: (1) PoseidoNet computer station in Camp Navarro was not found by Chosen One, (2) on the oil rig no talk was possible with the main command troop encountered on PoseidoNet, (3) it is not certain, if talk with the main command by PoseidoNet from Gecko was possible after destruction of the oil rig.
 * Main command used the Enclave Vault-Research Control station connected to PoseidoNet, linked with some Navarro computer station and Poseidon Oil Reactor No. 5 computer station.
 * Another PoseidoNet station on the oil rig was forementioned unstaffed DataPlex 2000 SmarTerminal, located on Entry level. There were about 500 names of its users. When illegal procedure detected (concerned probably with Security Passkey) further access to this terminal was denied and maintenance alert was sent.
 * Main Navarro computer was plugged into Enclave net, as well as separated computer station on PMV Valdez, when conected with the oil rig docking facilities ("Welcome to the Enclave").
 * Seen by Chosen One large Enclave computers were staffed by 3 technicians - known examples:
 * the oil rig reactor computer – Atomic Energy Commission,
 * Camp Navarro main computer.

Reconditioning center
Reconditioning center was mentioned by the President as the right place for the Chosen One wandering through the Executive Office (according to Fallout Bible Horrigan's loyalty was reinforced by Presidential Directive through various conditioning and testing programs). It is not certain, if drill sergeants were present there (Chosen One didn't find this place).

US Armed Forces executive branch
Counterpart for prewar US Army and US Marine Corps.

Enclave Control Company
The Enclave Control Company (EC Company) was the only unit responsible for perimeter defense.
 * Part of this company was sgt. Granite's squad of 4 experienced troops (200 hp). In Fallout 2 ending this squad was used as ad hoc support on the oil rig. The squad was equipped with Advanced Power Armors and armed with:
 * Pulse Rifle,
 * Turbo Plasma Rifle,
 * Gatling Laser
 * Plasma Grenades

Very likely the EC Company was responsible for Camp Navarro perimeter defense. In that case it could consist also of Enclave Patrolmen. Encountered on Navarro perimeter the Enclave Patrolmen claimed places of encouners as the Enclave territory and called the PC an illegal alien (if not a part of ECC - Enclave Patrolmen could be another unit, because of their Cap. Pickard rank - a company very likely).
 * The Enclave Patrols on Navarro perimeter were light teams of 4 Enclave Patrolmen (150 hp). More rare, but still possible were 8 troop squads - 2 teams in fact. They were reporting to some base, but they were absent at Camp Navarro. Patrols were equipped with Advanced Power Armors and armed with advanced one hand weapons, like:
 * Pulse Pistol,
 * Plasma Pistol,
 * Gauss Pistol,
 * H&K G11.
 * The Enclave Patrolmen took part in Mariposa Military Base excavations also. According to remnants found there (among them cap. Pickard and sgt. Bracks bodies) they were equipped with Advanced Power Armors and armed with:
 * Cattle Prods,
 * energy pistols,
 * Plasma Grenades (and probably Plasma Rifles and Laser Rifles also - it was supermutants equipment).

According to Fallout Bible Melchior, miner form Redding, was kidnapped to work during Mariposa Military Base excavations by the Enclave patrol (according his son he went away with some man dressed in metal clothes), while slave workers there were caught by (verti)assault squads.

Verti-assault unit


Highly mobile long range assault unit. Because of security purposes the Enclave main command can send verti-assault team (called assault squad also) even to as distant place as Gecko. Verti-assault unit was at least platoon size and consisted of at least 2 squads. It was stationed on the oil rig and was absent in Navarro. Its troops are equipped with: Known verti-assault operations were connected with the Project (providing FEV Curling-13 test objects). It was: Some assault squads had caught slave workers for Mariposa Miliary Base excavations also.
 * miniguns with cartridge cases - Rockwell: CZ53 Personal Minigun or Avenger Minigun (according to Fallout 2 intro),
 * plasma weapons (according to the Enclave main command), which was similar to Navarro outdoor guards, who were wielding Plasma Rifles.
 * seizing of Vault 13 - at least 2 verti-assault squads present according to  Fallout Bible and at least 1 vertibird and 6 troops with 3 miniguns present according to Fallout 2 intro,
 * destruction of Arroyo - at least 2 vertibirds present according to Hakunin.

It is certain, that verti-assault unit uses at least one or two aircrafts and consists at least of two squads, so one squad - one vertibird rule is possible. Verti-assault unit should consist of at least 14 crews: CO, his sergeant and two at least six troop squads.

The oil rig guard unit
Guard unit particularly provided security for Test Subject Holding Level (detention cells). This unit was located at separate barracks on the docks level (Entry Levels). All guards were equipped with Power or Advanced Power Armors. Guard unit consisted of at least three teams (Bravo and Gamma were referred at floating texts, so Alfa team should be present also).
 * Guard Barracks Level - 22 guards:
 * bedroom - squad of 8 less experienced guards (150 hp) equipped with Power Armors and Gauss weapons and 2 troops equipped with Advanced Power Armors (200 hp),
 * storage crew and gym – 2 guards equipped with Power Armors and Super Sledgehammers, a guard equipped with Power Armors and Power Fist (140 hp),
 * armory, boots room and other rooms – 9 guards (200hp) equipped with Advanced Power Armors and mainly big energy weapons,
 * 7 security bots,
 * Detention Cells Level - 8 guards (200 hp) equipped with Advanced Power Armors, 6 bots,
 * total 24 bots in the known parts of the Enclave, including 13 bots present on Guard Barracks and Detention Cells Levels.
 * 2 dead unarmed Enclave Guards at crashed vertibird at Klamath canyon (Jul 2241), one of them – burned, accompanied by damaged Mr. Handy (notice: Mr. Handy accompanied soldiers during secret transactions in New Reno also ),
 * according to Fallout Bible during execution committed on “farmers” family at the beginning of September 2241 Secret Service agent Horrigan was accompanied by two the Enclave guards.

Camp Navarro
See also: Navarro
 * Called Camp Navarro according to drill sergeant Dornan. Called a base by all senior staff during an alert. Matt, Brotherhood of Steel member present in San Francisco, called it a base also.
 * Established as a stopover point for the maintenance and refueling of vertibirds. Air Traffic Control and Communication Center were present there also.
 * Commanded by unknown rank elder officer called Base Commander, who was responsible for security of tanker staying in San Francisco docks also (holds a tanker FOB). Base Commander was supported by drill sergeant Dornan (the only person, who could be called duty officer also) and Quartermaster (responsible for armory and kitchen).
 * There were total 40 crew, including 30 troops. Not fully staffed Navarro guard unit (platoon equivalent) consisted of:
 * heavy (outdoor) squad equivalent - 11 guards equipped with Advanced Power Armors and Plasma Rifles, led by drill sergeant Dornan,
 * light squad equivalent - 10 less experienced guards equipped with Combat Armors (including Commander's door guard and Snookie, deathclaw's cell guard), the only encountered the Enclave light troops (notice: it was planned in van Buren, that the Enclave background character Arcade Grannon and encountered in Utah area the Enclave lost patrol leader would be equipped with the Enclave Combat Armors).

According to Fallout Bible no one knows what happened to Navarro after Fallout 2 - with the destruction of the Enclave, the base may not have been able to maintain itself for more than a few months before needing to move on or change its operations. It's unlikely that the Brotherhood of Steel seized it after the events in Fallout 2, because they didn't have a strong military presence up North at the end of this game. They would have been interested in taking it, however - although they would have suffered serious casualties.

Other active outposts
According to AHS-9 the Enclave had hidden bases all over the shards of old California. Presence of the other then Camp Navarro outposts was confirmed by technicians there, as well as fact, that there wasn't any outposts north from Navarro. Other the Enclave outposts: (1) could have some communication facility similar to one present at Camp Navarro, (2) could be as covered as Camp Navarro with its Gas Station, taken care of by old Chris (notice: quite similar issue to low staffed, "passive" Brotherhood of Steel outposts in the Northern California), (3) could be old government military facilities, as well as MacArthur Army Base, mentioned in van Buren New Canaan design document or could be old Poseidon facilities (notice: according to J.E. Sawyer's Fallout PnP the Enclave remnants were using such locations), (4) could be marked as two lighting points in California on the world map at the Enclave Executive Office war room.
 * "Place where replacements for Camp Navarro came form" - hypothetical recruitment outpost (according to dialogues with drill sergeant Dornan and old Chris also):
 * was located on the mainland, but not north from Navarro (replacements got to Navarro on foot, so their departure place can’t be the oil rig) and probably not in San Francisco area (at least there were no vertibirds),
 * could be covered or hidden,
 * could be old government military facility or old Poseidon facility,
 * should have some person in charge and bureaucratic supply personnel, referred as "paper-shuffling jackasses": (1) more numerous then present in Camp Navarro, (2) similar to Quartermaster encountered there, (3) entitled to equip a new replacements with an Advanced Power Armor set (Advanced Power Armor was proper uniform for Camp Navarro guard), however not everytime replacements could obtain it (like Chosen One),
 * could have some communication facility and some computer stations (operated by necessary staff),
 * could have not vertibird landing pads and air traffic control facilities,
 * it sent to Camp Navarro non-Enclave replacements; women and mentally handicapped candidates were allowed (latter ones easy to be reconditioned); replacements could be informed about Camp Navarro entry password and should obtain some identification papers, demanded by Camp Navarro senior staff during alerts; non-Enclave candidates should have access there - eg. shouldn't be killed by the Enclave patrols,
 * could be base for EC Company or at least the Enclave Patrolmen (who were absent at Camp Navarro),
 * Matt, Brotherhood of Steel member present in San Francisco, didn't inform Chosen One about this place and for some Chosen One couldn't find it and didn't ask about it Navarro computer and Navarro staff; it is not certain however, if such outpost was located south of San Francisco (beyond the Fallout 2 world map).
 * It is not certain, if mentioned in New Canaan design document MacArthur Army Base, was active. Encountered in Utah area lost Enclave patrol, that was searching MacArthur Army Base, should have some place of departure also.
 * There was no the Enclave presence in the government facilites like:
 * located in old California and near its borders: Sierra Army Depot, "Toxic Caves" Depot, Lost Hills Bunker, West Tech Research Facility or the Environmental Protection Agency,
 * located on van Buren area (southwest mainly): Hoover Dam, the Nursery, Bloomfield Space Center - where the Enclave members were present before the War only, Tibbets prison (and not exactly governmental, but funded by military Boulder Dome or Senator Todd Peterson's secret bunker, financed with help of Poseidon Oil and the Enclave),
 * Pentagon, located in the D.C.
 * In some government facilities the Enclave appearance after the war was temporary, eg. in Mariposa Military Base or in Vault 13.

US Chemical Corps
US Chemical Corps (USCC) was US Armed Forces service branch. Its members were the Enclave's scientific staff, mentioned by Fallout Bible as officers. In year 2241 it was commanded by Lt. Col. dr. Charles Curling. Its dependence on the main command or to CHQ is not certain in light of fact, that dr. Curling reported about the Project directly to the Cabinet. There were 16 generic USCC members present on the Test Subject Holding Level and Research and Development Project Area and at least one generic civilian wearing lab coat on the Guard Barrracks Level, dr. Schreber at Navarro and deserted dr. Henry in Shady Sands. US Chemical Corps known works were:

The Project
The Project – creation FEV Curling-13 lethal virus. Human samples were obtained from the Vault behavioral project. It was also purpose of chems exchange with the New Reno mobsters (family Salvatore).

The experiment on Frank Horrigan
FEV extensivly inoculated and half mechanized object reached extremally increased endurance (999 hp). Its FEV lowered intelligence had to be supported by constant drugs injections provided by permanent armor. Object was armed with ultimate weapons, like: After a few horrifically successful field tests (against local populations in the wasteland probably), Horrigan becomes the Enclave's solution to numerous sticky problems and once again he became Secret Service agent (March 2239).
 * Plasma Gun with burst of 3 x 30-70 dmg,
 * uncharged knife causing 15-30 dmg.

Intelligent deathclaws
Since 2235 the Enclave has experimented on deathclaws, attempting to create special fighting units for waging war in hostile environments. Animal handlers were used there. Known intelligent deathclaws were:
 * deathclaw pack (unit) at Vault 13, consisted of 6 mature deathclaws, including:
 * Gruthar, the pack leader (claw 5-10 dmg),
 * Kerith, the current pack mother,
 * four mature pack warriors (males probably, Dar - claw 5-10 dmg, Thearn and Valdis - claw 3-4 dmg, Jul and present only at dialogue file generic deathclaw guard),
 * Goris (development: 134->187 hp, 1-30 -> 1-47 dmg, IN 5->8),
 * 2 baby deathclaws (and 12 egg shells present at the nest),
 * other deathclaws, who were sent into the desert surrounding Vault 13 to check for any escapees or witnesses,
 * other mothers mentioned by Kerith,
 * Xarn, tested in Navarro (claw 5-10 dmg).

According to early versions of Fallout timeline many of the Enclave experiments on deathclaws were tested against Horrigan (year 2235).

Cyber-genetics
Cyber-genetics experiments concerned K-9 and Robodog units and were performed by dr. Schreber and dr. Henry: There was mentioned in Fallout Bible basic cybernetic maintenance facility, which was the equivalent of cybernetic janitorial duty.
 * inexperienced K-9 statistics: 127 hp, 16 dmg, 14 AP,
 * inexperienced Robodog statistics: 100 hp, 16 dmg, 9 AP.

Earlier research
According to Fallout Bible:
 * it was possible that the wannamingos were old Enclave experiments or even experiments from before the Great War,
 * works concerning Power Armor were conducted as follows:
 * in 2198 the Enclave worked on various new technologies, including Power Armor variations; none of these were much of an improvement over the conventional old school Power Armor, and some were actually worse,
 * in 2215 under Presidential Order, the Enclave scientists begin to work on an upgraded version of Power Armor; many prototypes are developed and tested;
 * in 2220 the Enclave scientists develop a reliable version of the Mark II Power Armor (according to sgt. Dornan - Mark II Power Combat Armor).
 * there were some pre-war abandoned, performed together by the Enclave and Poseidon Energy, eg. abandoned technology level 9 Advanced Power Armor project codenamed ATHENA (planned to appear in van Buren).

Navy issues

 * Despite of fact, that Pacific Fleet was directed there before the War, the oil rig should have own defending naval task force, similar to contemporary aircraft carriers task forces (March 30 2076: The U.S. President ordered the Pacific Fleet to the Poseidon deep sea oil derrick located at a secret location out in the Pacific - referenced in the Sierra Depot GNN Transcript holodisk)).
 * Chinese fleet remnants are possible also, the example is submarine present in San Francisco.

External defenses
Guns connected with naval IFF system, mentioned by tanker captain - air defense and anti-naval defense were possible, probably similar to another known turrets, like:
 * 5 mm JHP dual miniguns at Sierra Army Depot and .223 dual heavy miniguns inside the oil rig (eg. used for close airdefense),
 * plasma turrets at Navarro or heavy laser turrets in the Vault City (demanding significant amounts of energy).

Naval facilities

 * naval IFF system,
 * empty docking place for PMV Valdez on the oil rig, empty, huge docking area prepared for tankers fleet, no sailors encountered on the oil rig,
 * no coast & docking facilities in Camp Navarro (however it didn't have to be established right in the place of the pre-war Poseidon refinery).

Cooperation with the United States Secret Service
The United States Secret Service (USSS) was law enforcement agency responsible both for protection of state secrets and the President’s protection. Before the War Secret Service could be the part of the United States Department of Treasury, as well as other law enforcement agencies. After the War USSS could became a part of the Enclave armed forces or just cooperate with them. The only proof, that Secret Service could be part of armed forces is Fallout Bible statement, that USSS agent Frank Horrigan has always been loyal to the armed forces (however he was a troop for some time also). Concerning cooperation with the armed forces, according to Fallout Bible:
 * there were soldiers, who wanted to accompany Horrigan on his missions, or witnessed some murders or tortures commited by him (eg. Sgt. Granite),
 * during execution committed on “farmers” family at the beginning of September 2241 Horrigan was accompanied by two the Enclave guards,
 * Horrigan was present during Vault 13 seizing by verti-assault squads also.

Frank Horrigan was the only known US Secret Service agent. USSS agents protected Executive Office (according to President's seretary floats and dialogue with the President) and could be presidencial bodyguards also. They were probably equipped with Advanced Power Armors.

During simple assassinations Horrigan was accompanied by 2 troops equipped with Advanced Power Armors and miniguns. During deathclaws' community extermination at Vault 13 he was by accompanied 5 troops. It is significant, that Horrigan and his troops didn’t hesitate to enter Shi’s part of San Francisco.

USSS organization:
 * possible person in charge, some office,
 * agent Horrigan as its main field executive force and leader of detached to Secret Service armed forces squads or teams,
 * some presidencial bodyguards (who could be called "guards" also by the President).

USSS had another system of ranks or positions then Armed Forces also ("agent" position present).

See also:
 * Example of field operation - Mariposa Military Base excavation
 * Enclave of the United States Armed Forces procedures
 * execution committed on “farmers” family
 * Enclave Armed Forces - human resources