An opposing force is a military unit tasked with representing an enemy, usually for training purposes in war game scenarios. The related concept of aggressor squadron is used by some air forces.
U.S. OPFOR soldiers playing the role of Iraqi insurgents in Fort Polk, Louisiana.
A UH-1H replicating a Mi-24 at Fort Irwin in 1985
Dutch soldiers of 11 Pantserinfanteriebataljon Garderegiment Grenadiers wearing mohawk-style additions on their helmets to denote opposing force status.
New Zealand Defence Force soldier denoting opposing force status by wearing Desert Disruptive Pattern Material (DPM) in a temperate environment.
A vismod is a vehicle, aircraft, or other object that has been altered to simulate military equipment used by an enemy force, in order to make military exercises more realistic. "Vismod" also refers t
A trio of F-5E Tiger II's flying in simulated Soviet paint schemes and markings as part of an Air Force aggressor squadron
An M551 Sheridan visually modified to resemble a T-80.
A Centurion tank visually modified to resemble an M1A1 Abrams for the film Courage Under Fire
US Army vehicles visually modified for OPFOR training at Fort Irwin