Campaign
A campaign is a series of related major operations aimed at achieving strategic and operational objectives within a given time and space [jointchiefs2016dictionary].
Campaigning binds time to purpose: it determines what must happen first, what can be deferred, what must be sustained, and what can be risked. Campaigns are therefore also institutional: they require force generation, sustainment, and political support that extend beyond any single battle.
References
[jointchiefs2016dictionary] Joint Chiefs of Staff. (2016). Department of Defense Dictionary of Military and Associated Terms. Joint Publication 1-02 (as amended through 15 Feb 2016).