Department of the Army The Department of the Army is the standing armed paramilitary force of the Enclave . It is the most technologically advanced , and well trained military group in the known post - nuclear United States . Background . Pre - War . Little is known about the status of the Enclave military forces before 2077 , and it is not entirely out of the question that they may not have existed at all , with the Enclave originating from the United States government and army . However , the Enclave presence on the Oil Rig indicates that at least some kind of a security force was present . Another indicator is the Bloomfield Space Center , which was taken over by Enclave agents following the abandonment of the space project by the U . S . government and secured for their purposes ( including transportation off - world . ) Post - War . With the great nuclear devastation of 2077 and the subsequent collapse of the United States , Enclave members and loyalists relocated to reinforced locations across the United States , with the headquarters being established on the Poseidon Oil Rig . Additionally , numerous military stockpiles were commandeered , either remotely or by the evacuating Enclave themselves , providing the organization with necessary ordnance . With extreme levels of radiation persisting on the mainland , they were forced to remain within their bases , as the regular T - 51b power armor was unable to provide adequate protection . The Enclave ' s military were steadily trained and expanded , with new equipment being developed for use in the field , including the venerable advanced power armor . The Enclave began to become involved on the mainland , operating under the radar of the emerging wasteland powers as the now long - dormant one . . . Military presence . The government of the Enclave was located on the Poseidon Oil Rig , where the President ( the acting commander - in - chief ) and other high - ranking officials were also located , along with the necessary support staff and a significant contingency of seasoned soldiers of the regular army and elite Secret Service agents , all eventually armed with power armor and energy weapons as standard issue equipment . The second largest base was Navarro , a pre - War Poseidon Oil refinery - turned - military outpost acting as a waystation for Vertibirds and their first outpost out on the United States mainland . It was heavily defended , with dual plasma turrets covering the perimeter , deadly efficient guards in advanced power armor stationed in the base and patrolling some of the areas around it , and an entire field of plasma mines securing the exterior of the complex . Sometime after the destruction of the oil rig and the attack on Navarro , the remaining Enclave military forces rallied and withdrew to the east coast under the direction of Augustus Autumn ' s father . Their destination was the Raven Rock continuity of government facility , which was adopted as their new command center . In addition , numerous other outposts were present in some form or another across the United States , either manned , automated , or otherwise . Organization . Structure . The nationwide leadership of all currently known Enclave military holdings , divisions and otherwise across the remains of the country belongs to the enigmatic Enclave High Command , who are based out of an unidentified location . Departments . Army . The Enclave ' s military force is very small , but powerful ; however , according to the " Fallout Bible " , the Enclave army was composed of hundreds of soldiers . Their limited numbers ( decimated further after the destruction of the Oil Rig ) are offset by their unlimited access to advanced technologies ― a private is usually outfitted with a suit of advanced power armor and a high - grade energy weapon ( usually a laser rifle or plasma rifle ) . They also possess the ability to project power beyond any other factions in the wastes , thanks to their Vertibird s . Furthermore , their numbers are augmented by an assortment of military robots at their disposal , ranging from Mister Handy service bots to the powerful sentry bot s . In terms of training , they are second to none , drawing from the best traditions of pre - War U . S . military and training their soldiers using its methods , resulting in a uniformly efficient and deadly fighting force . The only comparable organization in this regard is the Brotherhood of Steel , and even they are inferior , as the Brotherhood ' s xenophobia and focus on technology have resulted in military training eroding . The New California Republic Army , while not as well - equipped or trained , has the numbers , a vast army of soldiers far greater in number than anything the Brotherhood or the Enclave can muster , negating their technological advantage . For example , the NCR took Navarro after the destruction of the Oil Rig , despite a very high difference in terms of technology and training . Air Force . The most effective combat units , Verti - assault teams are composed of several troopers . Their Vertibirds are equipped with Gatling lasers for attacking infantry , missile launchers for dogfighting and attacking ground infantry or specific areas , and mini nukes to perform bombing runs . Verti - assault teams commonly set out to drop off squads at camps , or other strategic locations . Navy . Despite the fact that the Pacific Fleet of the United States Navy was ordered to the Poseidon deep sea oil derrick on March 30 , 2076 via Presidential order , it is unknown if after the Great War the Enclave maintain control of or utilize any functioning United States Navy warships and / or sea vessels aside from the PMV Valdez ( albeit indirectly ) . Secret Service . The United States Secret Service was a United States federal government agency , operating under the auspices of the Enclave following the Great War and the organization succeeding the American government . The Secret Service was reformed , tasked with protecting the government ( most notably the President ) , though their mandates will occasionally include being deployed on delicate missions to the mainland ( such as silencing a Brotherhood outpost or in state - sanctioned assassinations ) . Frank Horrigan , during his tenure as the Presidential bodyguard , would be considered a part of the Secret Service . Sub - departments . Enclave Patrols . One of the most deadly encounters in the wastes , Enclave Patrols are composed of three troopers in advanced power armor usually armed with various energy weapons ( laser and plasma rifle s ) or infantry support weapons such as Avenger minigun s . They are made more dangerous by their employment of effective small - unit tactics . They use techniques such as flanking and using sentry bot s to provide cover fire . They rarely use hand - to - hand weapons , and are very adept at using high - yield grenades to force enemies out of cover . Enclave Control Company ( ECC ) . An elite unit responsible for perimeter defense , a squad of which assisted the Chosen One in eliminating Secret Service agent Frank Horrigan , under the command of Sergeant Granite . Their members are equipped with the best and most advanced weapons and powered armor available to the Enclave in 2242 and are a very versatile group . Granite ' s squad was composed of four elite Enclave troopers : RHO Experiment . An experimental camp consisting of a network of turrets with the RHO chip encoded in them . The experiment focuses on the viability of a system where a single overseeing officer is deployed with a network of turrets ( thus showing that even after severe blows to their groups integrity they still had the manpower and flexibility to deploy such experimental systems . ) Constituency Enforcement Points . A network of military checkpoints set up across the wasteland after the reactivation of Project Purity . Additionally , multiple Enclave outposts , either military , scientific , or both , were initialized all across the Capital Wasteland . Enclave Squad Sigma . The Sigma squad is a special unit of Enclave soldiers guarding the mobile base crawler in 2277 . The Sigma squad is assigned to protect the crawler in case of an attack . It consists of six Enclave soldiers and the Sigma leader , all with different specialties . Technology . The Enclave is one of the most technologically advanced military powers in the wastes , having access to pre - War stocks of weaponry and equipment as well as advanced suits of powered armor and a fleet of working VTOL transport craft . However , their primary disadvantage is their numbers ; the Enclave has severely limited manpower , restricting their capability to project power across the United States efficiently . The Enclave have access to cutting - edge technology and equipment , surpassing anything other factions possess . Their most basic ( and advanced ) asset is the advanced power armor , significantly better than the T - 51b power armor encountered in the wastes in terms of protection , survivability , and general efficiency . Coupled with their access to stocks of pre - War energy weapons and manufacturing facilities to create more , they field a disturbingly effective array of state of the art ranged weaponry . Wars . The Enclave has gone to war on more than one occasion . A chronological order of the wars they have been stated to have played a part in are as followed : Appearances . The Department of the Army appears in " Fallout 3 " , and indirectly in " Fallout 2 " , and was also to appear in the canceled " Van Buren " .