war-monger

Noun

warmonger (plural warmongers)

1. (derogatory) Someone who advocates war to an enthusiastic or ardent degree.
   • Wham! Overnight he [Dwight D. Eisenhower] became a warmonger.1952 September 22, “Since Stevenson Prefers 'Compromise', Foreign Policy Is Squarely in the Campaign”, in LIFE, volume 33, number 12, Time Inc., →ISSN, page 30

   Synonyms:

   bellicist, hawk, jingoist, militarist, war hawk

2. A mercenary soldier.
   • With that, out of his bouget forth he drew
     Great ſtore of treaſure, therewith him to tempt;
     But he on it lookt ſcornefully askew,
     As much diſdeigning to be ſo miſdempt,
     Or a war-monger to be baſely nempt;1590, Edmund Spenser, “Book III, Canto X”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, →OCLC, page 550

See all 3 meanings of warmonger