Military strategy is the practice of reducing an adversary’s physical capacity and willingness to fight, and continuing to do so until one’s aim is achieved. It takes place in wartime and peacetime and may involve using force, directly or indirectly, as a threat. Military strategy is often divided into four components: ends (objectives), ways (courses of action), means (resources), and risk. The practice of military strategy is described along with military power, which is augmented by nine “principles of war”: objective, maneuver, surprise, mass, economy of force, offensive, security, simplicity, and unity of command. A general will likely use combinations of military strategies, linking them into a series of operations or campaigns.