What is another word for "war"?

Roget's Thesaurus (1911) lists these synonyms for "war": abate, abatement, accession, accord, action, against, agency, agent, agentship, agio, ahead, akimbo, alienate, alienation, all, allow, allowance, amity, amphitheater, and, animosity, appointment, arena, arms, assignment, attorney, authority, backwardation, bad, bargain, bate, battle, bear, beard, beat, below, bid, big, bird, bitterness.