Delta Force

The 1st Special Forces Operational Detachment-Delta (1st SFOD-D), popularly known as Delta Force, is a U.S. Army unit used for hostage rescue and counterterrorism, as well as direct action and reconnaissance against high-value targets.

History
Delta Force was established in the 1970s when the operations of the British Special Air Service indicated an increasing trend in unconventional warfare. A Delta Force unit is known to have participated in the 1998 Raccoon City Destruction Incident. Unlike the local National Guard which was tasked with re-establishing the failing quarantine zone and rescuing civilians, Delta Force was flown deep into the city's north-eastern industrial zone on September 29 to recover surviving samples of the G-Virus ahead of the Sterilization Operation. Given faulty intel thanks to an unreliable network of Umbrella moles in the military and vice versa, Delta Force was not dropped at Dr. William Birkin's laboratory, but Umbrella's Incineration Disposal Plant P-12A, masquerading as a scrap yard. Upon their detection, Umbrella paramilitary commander Colonel Sergei Vladimir had five T-103s dropped into the yard. Delta Force succeeded in destroying them with the help of the experimental anti-B.O.W. weapon, Demon Sword of Paracelsus, but at the cost of the entire unit. Former soldier Jill Valentine, who was given the honour of training alongside Delta Force in bomb disposal, escaped from the city via the scrap yard and saw their bodies.

Following Delta Team's loss, the US military began establishing new units trained in Anti-B.O.W. combat. USSTRATCOM's Anti-Umbrella Pursuit and Investigation Team was established immediately after the city's destruction, and was tasked with covert operations. The more conventional and larger Federal Bioterrorism Commission, was established to tackle B.O.W.s in a more conventional manner.