(Capcom's primary storyline)
The Umbrella Biohazard Countermeasure Service (UBCS) was a private military force owned by the Umbrella Corporation, specializing in rescue operations during biohazard outbreaks. It was founded by former Soviet Colonel Sergei Vladimir.
Although the U.B.C.S. has been very successful in every operation but one, the unit suffers a high mortality rate due to the hazardous nature of their missions. Thus, the U.B.C.S. is comprised almost exclusively of convicted war criminals and mercenaries from around the world who joined the U.B.C.S. as an alternative to capital punishment for any crimes. The unit consisted of about 120 operatives divided into at least five platoons, named in the N.A.T.O Phonetic Alphabet as "Alpha", "Bravo", "Charlie", "Delta," and "Echo".
The U.B.C.S was deployed to Raccoon City during the t-Virus outbreak on September 26, 1998, under the guise of reinforcing the Raccoon Police Department (R.P.D.). Although seemingly there to help halt the spread of the t-Virus infection and evacuate any survivors from the worst affected areas (Umbrella employees were to take priority, and members were encouraged to use regular civilians as decoys or human shields if their situation became dire), the Umbrella Corporation's true motives involved using the unit as guinea pigs for their Bio-Organic Weapons (B.O.W.), as well as any other irregular creatures that resulted from infection during the outbreak. Because of this, almost all of the unit's members were killed before they could execute their mission. Carlos Oliveira was the only confirmed survivor during the outbreak.
In the closing hours of the outbreak, a U.B.C.S. team under the command of Arnold and under the supervision of an Umbrella executive named Tommy were tasked with retrieving the bio-weapon Nyx. Arnold deserted after learning of the plan to nuke the city and the rest of the team were slaughtered by Nyx.
Monitors were special operatives within the U.B.C.S. whose purpose was to gather combat data from B.O.W.'s and the various other infected creatures wandering Raccoon City whilst maintaining a clandestine profile within the U.B.C.S. ranks. They were also tasked with gathering samples and destroying all evidence of Umbrella's involvement in the research and production of the t-Virus. To better coordinate their efforts, Monitors were acquainted with each other prior to the beginning of the operation.
Due to the traitorous nature of this occupation, Umbrella selected only the most heinous of war criminals to serve as Monitors, specifically those displaying anti-social and sociopathic tendencies, as well those displaying absolutely no regard for their fellow members. Nikolai Zinoviev and Tyrell Patrick were merely two of several Monitors within Raccoon City conducting "Operation: Bravo-16" (the code used throughout the mission by Monitors regarding their true objectives). Monitors were naturally given preferential treatment over regular mercenaries, as they were provided with means of communications to contact their superiors, were implanted with higher-quality vaccines and were provided with instructions on how to reach certain extraction points.
Every Monitor participating in "Operation: Bravo-16" was killed during the course of the mission. This was, for the most part, due to the cunning handiwork of the particularly ruthless operative, Nikolai Zinoviev. Intent on hoarding all research and combat data for himself, Nikolai systematically murdered his comrades before stealing the information they had gathered.
Even with the complete annihilation of the Monitor unit, "Bravo-16" was deemed a resounding success, due to the massive amount of combat data Umbrella had garnered from the incident.
It is not known exactly how many members and support staff comprise the Umbrella Biohazard Countermeasure Service as a whole, but it is known that the four platoons (Alpha, Bravo, Charlie, and Delta) sent into Raccoon City numbered 120 men altogether.
It has also been confirmed that the UBCS has a compliment of light armor personnel carriers and transport aircraft such as the Aérospatiale Puma helicopter (as seen in Resident Evil 3: Nemesis). Depicted in a special ending of Resident Evil Outbreak, two characters are seen attacking a horde of zombies in a UBCS armored personnel carrier. In Resident Evil The Umbrella Chronicles, Umbrella's forces are seen being transported by a variety of aircraft including UH-60 Blackhawk helicopters. The APC's featured in Outbreak resemble M8 Greyhounds. This is strange because M8's are quite old APC's dating back to WWII, though it does remains in service in some 3rd world countries.
Due to their involvement in tactical, hazardous, and combat operations, U.B.C.S operatives wear and use military grade tactical gear. Operatives are seen wearing black combat boots, beige-colored fatigue pants, a green fatigue shirt, and webbing over the shirt to carry equipment; with the U.B.C.S emblem imprinted on the back. Some carry their pistols in drop-leg holsters, where others use a cross-draw holster attached onto their webbing.
Only squad leaders and commanders are seen to use the U.B.C.S. green beret.
- Operation Raccoon City
The U.B.C.S's appearance is somewhat more modern and tactical than in previous games. Most notably, the majority of (living) U.B.C.S. members have their faces covered. Some wear knitted hats and cover their faces with bandanas. Others wear balaclavas with tactical goggles, and some wear bonnie hats as well.
Weaponry utilized was primarily of military nature. Currently the standard rifle of the unit is the M4A1, with no accessories. The official sidearm was the SIG Pro SP2009, though some mercenaries possessed STI Eagle 6.0s.
Mk3A2 H.E (High Explosive) grenades were common, and were notably used by Mikhail and Tyrell Patrick. For heavy conflict, each platoon was also equipped with several disposable AT-4 anti-tank rocket launchers.
U.B.C.S members armed with the Heckler & Koch MP5 sub-machine gun were encountered fighting Thanatos to little effect. Nikolai Zinoviev used a special launcher attached to a Heckler & Koch PSG-1 to take a blood sample of the same Tyrant, but the rifle itself was never actually fired. The UBCS unit tasked with hunting down the bio-weapon Nyx were also armed with MP5 machine guns. Another operative, Arnold was seen using a PSG-1 as well.
The weapons used by Klaus' team were similar to the standard weapons used by Delta Platoon, though the M4 carbines used by Klaus' unit had M203 Grenade Launchers mounted beneath the barrel, along with a single Benelli M3 shotgun. Throughout their mission, the unit rode in a flatbed HUMVEE with an attached Browning M2 .50 heavy machine gun. While most of Klaus' team carried the same SIG SP2009s as the U.B.C.S members in Resident Evil 3, Klaus carried an additional SIG P225.
The unit in Resident Evil: Apocalypse was portrayed as more of a special forces unit then the mercenaries in the games, and they carried a greater variety of weapons then their more spartan counterparts. Their primary weapons are the IMI Tavor CTAR-21 and IMI Micro Galil assault rifles. They carried a variety of sidearms, including the Desert Eagle and Beretta 92FS. They did not seem to carry any explosive weapons besides M67 fragmentation grenades.
Known U.B.C.S. personnel
Umbrella sent 120 mercenaries into Raccoon City. The following are confirmed members of the unit:
Known operatives and associates