Multiplayer Factions

These are the confirmed multiplayer factions in Modern Warfare 2:

Faction: Task Force 141

Task Force 141

A multinational grouping of military units or forces for the performance of a specific operation or assignment.
Faction: US Army Rangers

US Army Rangers

The United States Army Rangers are an elite American Special Operations Force capable of conducting direct action operations.
Faction: Op For

Op For

An opposing enemy force.
Faction: Spetsnaz / Ultranationalists

Spetsnaz / Ultranationalists

Russian Army Special Forces, are the original Spetsnaz and are generally considered the best trained units of the Armed Forces of the Russian Federation.
Militia

Militia

Rebellion faction in Rio de Janeiro.
Navy SEALs

Navy SEALs

The United States Navy Sea, Air, and Land Forces, commonly known as the Navy SEALs, are the Special Operations Forces of the United States Navy
United States Marine Corps

USMC

The United States Marine Corps is a branch of the United States armed forces responsible for providing force projection from the sea, using the mobility of the United States Navy to rapidly deliver combined-arms task forces.
British SAS

SAS

The Special Air Service (SAS) is a special forces regiment within the British Army which has served as a model for the special forces of other countries.