WordNet (r) 3.0 (2006):

troops
    n 1: soldiers collectively [syn: military personnel,
         soldiery, troops]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "troops":
   armed force, armed service, army, array, career soldiers,
   fighting force, fighting machine, firepower, forces, ground forces,
   ground troops, hands, host, legions, men, military establishment,
   occupation force, paratroops, personnel, rank and file, ranks,
   regular army, regulars, ski troops, soldiery, standing army,
   storm troops, the big battalions, the line, the military, units,
   work force