belligerent

[1]	combatant , battler , fighter , scrapper
[2]	warring party , antagonist , contestant , warmonger , hawk , jingoist , militant

adj.

[1]	warring , warlike , militant , warmongering , hawkish , jingoistic , bellicose , martial
[2]	quarrelsome , pugnacious , contentious , disputatious , truculent , aggressive , hostile , combative , antagonistic , bellicose
[3]	war-ridden