mid-15c., from war (n.) + fare (see fare (n.)).

armed conflict between two or more groups of people, usually representing different nations or other political organizations.

war: the waging of armed conflict against an enemy; "thousands of people were killed in the war" war: an active struggle between competing entities; "a price war [..]

military service, war, contest, hostility

Warfare refers to an act of engaging in any type of conflict. The term includes any war or military conflict against another country. Depending upon the nature of conflict, warfare can be classified i [..]

(n) the waging of armed conflict against an enemy(n) an active struggle between competing entities

Warfare involving the use of living organisms or their products as Disease etiologic agents against people, Animals, or Plants.

Tactical warfare using incendiary mixtures, smokes, or irritant, burning, or asphyxiating Gases.

Warfare involving the use of Nuclear Weapons.

The manipulation of psychological influences, primarily concerned with Morale, to strengthen the ability of one's own country and weaken the enemy.

Asia

The waging of war or armed conflict against an enemy. * Bible, 1 Sam. xxviii. 1 *: The Philistines gathered their armies together for warfare, to fight with Israel. Military operations of some p [..]