Combatant (noun) جنگجو، لڑاکا

a person or nation engaged in fighting during a war.
Example: “in the long Russo-Swedish conflict, both combatants endured terrible sacrifices”
Wanton (adjective) بلا وجہ، بلا کسی اشتعال کے، شوخی کرنا

(of a cruel or violent action) deliberate and unprovoked.
Example: “sheer wanton vandalism”