An opposing force (alternatively enemy force, abbreviated OPFOR or OpFor) is a military unit tasked with representing an enemy, usually for training purposes...

Half-Life: Opposing Force is an expansion pack for the first-person shooter game Half-Life. It was developed by Gearbox Software and published by Sierra...

Counter-Strike and Day of Defeat. Half-Life was followed by the expansions Opposing Force (1999), Blue Shift (2001) and Decay (2001), developed by Gearbox Software...

learned catalogs. The name was derived from "Red Team", a term for the opposing force in a war game by Western states during the Cold War, a reference to...

"Friendly Fire - Half-Life Guide". IGN. Retrieved 2024-03-15. "Half-Life: Opposing Force (Video Game)". TV Tropes. Retrieved 2024-03-15. Hogdson, David (2004)...

an opposing force to dampen the effects of nicotine and this causes tolerance (the reduction in the effect of nicotine). The onset of this opposing force...

Training Center is part of the US Army Forces Command (FORSCOM). The opposing force at the National Training Center is the 11th Armored Cavalry Regiment...

ratio of output force to input force on a system Advantage of terrain, in military use, a superiority in elevation over an opposing force Advantage (cryptography)...

five-colour military camouflage pattern used by the Australian Defence Force. Replacing the jungle greens used from WWII, it was developed and tested...

Steam on August 24, 2005. As with Gearbox's previous expansion pack, Opposing Force (1999), Blue Shift returns to the setting and events of Half-Life, but...