Advanced Power Armor

Advanced power armor is a series of power armor models developed and produced by the Enclave after the Great War.

Background
 The development of the first suit of advanced power armor, designated X-01, began shortly before the Great War. The first test batch of the armor, designated X-01 Mk I, was developed for presidential bodyguards, and served as the baseline for the remnants of the United States military, who developed it into a power armor tailored for the post-War wasteland. It represented a radical, new approach to designing powered armor, eschewing traditional armor design philosophies, but was never deployed in larger quantities until the 23rd century. Work on the model was restarted by the Enclave in 2198, although it wasn't until 2215 that the research efforts began in earnest under a presidential mandate, with the first production model created in 2220.

The X-01 advanced powered infantry combat armor is designed for a single human operator, provided with the comfort and protection of a next-generation suit of armor. While the T-51 power armor relied on a lightweight poly-laminate composite shell for protection, the advanced model uses lightweight metal alloys as a basis, reinforced with ceramic castings at key points. The resulting space savings allowed for reducing the armor's profile without compromising protection. Classic power armor pauldrons were retired in favor of a hump that encloses the operator's head, significantly reducing the chance of enemy fire damaging the vital areas surrounding the head. Perhaps the most noticeable change was a completely new helmet assembly. The unusual, insect-like design features a pair of polarized eyepieces in place of the usual vision slit, providing superior battlefield awareness. Its angled surfaces also help maximize the chance of outright deflecting projectiles and incoming fire.

The basic hydraulics system and servo-motors that provide the operator with enhanced strength are also high-quality models, with improved performance as opposed to the original T-51b. Additional features include an auto-gyro and the ability to lock them in position, allowing the suit to be stored upright (or the operator to take a nap while on guard duty), an air conditioning system for comfort, a radio headset, and an urine-recycling system carried over from the T-51b, allowing the operator to survive for weeks without water.

The combination of superior protection, mobility, and strength gave the Enclave a considerable advantage over wastelanders. Enclave's insignia was proudly worn on the breastplates of armors, while rank indicators were typically placed on the arms of the suit. However, while it was considerably powerful, it was not invincible. The Enclave's confidence in its technological superiority allowed the Chosen One to infiltrate Control Station Enclave without a problem thanks to the assumption that only Enclave troops would wear these suits. More importantly, the garrison at Navarro was defeated by the New California Republic Army, effectively destroying the Enclave's presence in New California. 

Despite their defeat at Control Station Enclave, the Enclave remnants would rally on the East Coast, at Raven Rock and Adams Air Force Base,Fallout 3 Official Game Guide Game of the Year Edition p.41: "The Enclave In the recent past, the Enclave—the remains of the United States government—were evacuated to an oil rig off the coast of California. Little is known about what happened to these forces, although the country has a new commander-in-chief: President John Henry Eden. However, recent reports and chatter have pinpointed the resurgence of the Enclave, with their base centered on a secure underground facility known as Raven Rock. Initial contact was made there 35 years ago. ''During this time, the new President Eden has been slowly rebuilding his resources, thanks in part to the technology already available at the Raven Rock military base. Vertibirds, weapons, and robots were easy to construct, but human followers were more difficult to find. The answer was to rely on Colonel Autumn, who controls the Enclave soldier forces, as well as creating a propaganda-spewing series of Eyebots sent to roam the Wasteland, spreading hope. Eden could spout his pro-government rhetoric, and promise a return of the pre-war America of legend: a land of white picket fences, baseball, apple pie, and good, old-fashioned American global supremacy. President Eden's secretive plan all along has been to rule over an America of the "pure," free from any mutation. He has learned of a ridiculously ambitious experiment known as Project Purity, and knew the time to strike had come: His Enclave forces would "reclaim" the Jefferson Memorial. By controlling the purified water, Eden would control the Capital Wasteland, and the rest of the country eventually. What better way to administer modified F.E.V.- which kills anyone infected with any form of mutation-than through the water supply?"'' (Fallout 3 Official Game Guide faction profiles) restarting the development of the advanced power armor family, with the Mark II serving as the basis for developing superior models.

Advanced power armor Mark I


Developed by the Enclave in 2220, the advanced power armor Mark I is the first true production run of the advanced power armor family. Initially designated Mark II Powered Combat Armor, the advanced power armor Mark I is also the first model of power armor designed, produced and deployed after the end of the Great War. This armor was developed off of the pre-War designed X-01 power armor, overcoming the flaws of its predecessor. The advanced power armor Mark I was the standard service armor of Enclave soldiers by 2241. By 2246, the advanced power armor Mark I was being phased out by the superior advanced power armor Mark II. Despite this, the Mark I remained as the Enclaves' standard issue power armor until after the sacking of Navarro. Although eventually surviving Enclave remnants like Arcade Gannon were forced to go into hiding, lest their armor result in their arrest. By 2281, the only remaining users of these suits were the Enclave remnants, and the suits took on the name of Remnants power armor. Despite advancing age and lacking maintenance, the Mark I continued to be one of the most effective models of power armor on the battlefield, and any who saw them were reminded why people once feared the sight of Enclave Vertibirds in the sky.

Advanced power armor Mark I (Tesla variant)


 Originally issued to officers at Navarro, this version of the regular Mark I fitted with Tesla attraction coils for added defense. The coils generate a low-intensity power field around the armor, helping disperse energy attacks and deflect melee attacks, improving the defense capabilities of an already impressive suit of armor. 
 * Gannon family Tesla armor - A unique variant of Tesla armor that is also the only attainable version in Fallout: New Vegas.

Advanced power armor Mark II


The advanced power armor Mark II initially represented a significant upgrade over the older Mark I. It was composed entirely of lightweight ceramic composites, providing even more protection than the regular advanced power armor. The suit was originally available in limited quantities. Following the destruction of the oil rig and the flight to the Capital Wasteland, the Enclave designated a variant of the Mark II as its official service uniform and manufactured it en masse once it gained access to Raven Rock and Adams AFB. The new Enclave power armor would eventually displace the older Mark I suits entirely with the Enclave justifying the change by claiming it offered superior protection to the Mark 1. 

Advanced power armor Mark II (Tesla variant)


 A heavily modified suit of standard Mark II armor used a long time ago by the Enclave, the most noticeable difference is the Tesla device rigged to the suit, with five attraction coils mounted on rounded shoulders. The armor is used by field specialists to take down large or armored enemies, boosting the energy damage output of their weapons through the attraction Tesla coils, channeled into both laser and plasma weaponry to produce devastating results. 

Hellfire armor


The most advanced power armor variant in the wasteland is the Hellfire powered combat infantry armor, developed based on regular power armor designs. A prototype version was developed shortly after the Great War by the Enclave stationed at The Whitespring bunker. In October 2080, one of the prototype suits was sent to Vault 51 at the order of ZAX 1.3c, impersonating Stanislaus Braun through his writing style. Further development of the armor was halted due to the Whitespring facility losing communication with the other Enclave facilities and the eradication of all Enclave personnel within the Whitespring facility. The armor's development was not completed until 2277, at the Enclave's facility at Adams Air Force Base, after reallocating resources from other projects into the Hellfire project. 