Tier One is a Tactical Shooter designed to put players in the role of Operators who are tasked with completing objective-based Operations & Missions. Missions are comprised of Planning & Execution stages which can be played cooperatively online with other players.
A generic proof of concept "Middle Eastern" style terrorist.
This OpFor would fall under your Guerrilla Warfare style independence fighter or Terrorist-Cell type known for either fighting off foreign invaders or potentially fighting for power and control against another group in their homeland.