The hard-hitting .S. Army Rangers and Britain's battle-tested Royal Air Force Regiment square off against each other -- and against a "Rogue" squad of private Military Contractors -- combat vets who now fight for the highest bidder.

Two battle-hardened veterans of U.S. Special Forces -- the "Green Berets" compete against a pair of commandos from Norway's super-secret FSK. And both teams compete against a "Rogue" wild card team comprised of two military contractors.

Three teams of elite warriors -- the U.S. Marine's Force Recon, the Canadian Light Infantry, and a "Rogue" Squad of private contractors -- slug it out. They test their combat skills with an arsenal of weapons: from knives and pistols.

It's Army versus Navy in USC's first "Coed Edition." Steven and Jennifer, from the U.S. Army, face off against Matt and Adrienne, from the Navy. And both teams compete against the "Rogue" wild card team -- private contractors Corey and Rebecca.

A showdown of Cold War rivals pits the elite U.S. Navy SEALs against Spetsnaz, the Soviet Union's most notorious frontline unit. They both face a third, "Rogue" force--Private Military Contractors, combat veterans who are now well-paid guns for hire.

Two front-line warriors from the U.S. Army's 82nd Airborne unit go head to head against commandos from the Israeli Defense Force--born and bred to defend the toughest turf on Earth. They also face a "Rogue" squad of private "guns for hire" contractors.