There are two factions at war in Resident Evil: Operation Raccoon City: the Umbrella Security Service (sent in to destroy evidence of Umbrella’s activities) and the U.S. Spec Ops team (tasked with investigating the T-virus outbreak). A new trailer for the game introduces the latter:
Resident Evil: Operation Raccoon City will be released on March 20th on the Xbox 360 and PlayStation 3. A PC version will follow sometime after the console release.