combat
noun /ˈkɒmbæt/
  /ˈkɑːmbæt/
[uncountable, countable]- fighting or a fight, especially during a time of war- in combat He was killed in combat.
- armed/unarmed combat (= with/without weapons)
- combat troops
- combat boots
- aerial combat
- Knightly combats were only a very small part of medieval warfare.
 Extra ExamplesTopics War and conflictc1- Our platoon has yet to see combat.
- The soldiers are in combat with rebel forces.
- The troops were locked in hand-to-hand combat.
- a fierce combat between two champions
- in mortal combat against dragons
- Hardly any enemy combat aircraft have been destroyed.
 Oxford Collocations Dictionaryadjective- fierce
- intense
- mortal
- …
 - be engaged in
- be locked in
- engage in
- …
 - mission
- operation
- zone
- …
 - in combat
- in combat with
- combat against
- …
 Word Originmid 16th cent. (originally denoting a fight between two people or parties): from French combattre (verb), from late Latin combattere, from com- ‘together with’ + battere, variant of Latin batuere ‘to fight’.