The system of game mechanics used when one PC or NPC does anything aggressive to another; The system used to define the outcome of an aggressive action (combat itself is an OOC concept, though the fight between characters is IC).
Combat, or fighting, is purposeful violent conflict intended to establish dominance over the Opposition The term "combat" typically refers to armed conflict between military forces in warfare, whereas the more general term "fighting" can refer to any violent conflict, including boxing and wrestling matches. Combat violence can be unilateral, whereas fighting implies at least a defensive reaction. However, the terms are often used synonymously.
Combat was an Exidy light gun arcade game released in 1985. In this war themed shooting game, the player had to protect his/her army in combat in a variety of combat theatres. Using the light gun, the player protected troops, tanks, and airplanes from attackers while destroying various different enemy structures that must be demolished in order to beat a particular level.