Noun
OPFOR (plural OPFORs)
(military) Abbreviation of opposing force.
Land Forces T-72 tanks advance towards the OPFOR on an exercise main The Land Forces are functionally divided into Deployable and Reserve Forces. Source: Internet
The F-5 was also adopted as an opposing forces (OPFOR) "aggressor" for dissimilar training role because of its small size and performance similarities to the Soviet MiG-21. Source: Internet
There are no full OPFOR games as published adventures, but the concept is a popular PBEM scenario. Source: Internet