Word Origin & History
campaign1640s, "operation of an army in the field," from Fr. campagne "campaign," lit. "open country," from O.Fr. champagne "open country" (suited to military maneuvers), from L.L. campania "level country" (cf. It. campagna, Sp. campaña, Port. campanha), from L. campus "a field" (see
campus). Old armies spent winters in quarters and took to the "open field" to seek battle in summer. Extension of meaning from military to political is Amer.Eng. 1809. The verb is first attested 1701. Related: Campaigned; campaigning.