- The term opposing force is occasionally used to refer to a genuine military foe. This article is concerned only with its use in simulated conflict.
An
opposing force (abbreviated
OPFOR, used in the United States and Australia) or
enemy force (used in Canada) 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. The United States maintains the
Fort Irwin National Training Center with the
11th Armored Cavalry Regiment serving in the main OPFOR role. Other major units include the
First United States Army which consists of 16 training brigades that often also serve as OPFOR. Fort Polk's Joint Readiness Training Center is another major training site typically reserved for units that are slated to deploy into conflict areas.
