U.S Military

The United States Military are the armed forces that fought the Viet Cong and NVA units during the Vietnam War alongside the South Vietnamese government. In the game, they are Nate's main allies.

In-Game
Nate will encounter numerous G.Is throughout the course of the story. Many of them have heard of the WhiteKnight contagion and express fear and forboding of coming into contact with it or anyone who has been infected. Notable U.S soldiers that Nate will encounter include Sgt. Jack Griffin of the U.S Marine Corps and Nate's brother Sgt. Caleb Walker, who has been infected with the contagion and is the main reason Nate has become involved in the game's events. There are numerous other Americans in the game, including two Green Berets that help Nate track down Nguyen Trang, and a helicopter pilot who is captured alongside Nate by the VC and who attempts to sell him out in order to save his own life.