2. An operation is a sequence of tactical actions with a common purpose or unifying theme. What may they entail? Carrying on combat, including movement, supply, attack, defense, and maneuvers needed to achieve the objective of any battle or campaign. Battles, engagements, and strikes, conducted by combat forces of one or more Services, coordinated in time and place, to achieve strategic or operational objectives in an operational area. A series of related major operations aimed at achieving strategic and operational objectives within a given time and space