THESAURUS
mounted policeman
G-man, MP, bailiff, beadle, beagle, bound bailiff, broncobuster, buckaroo, caballero, captain, catchpole, cavalier, cavalryman, chevalier, chief of police, circus rider, commissioner, constable, cowboy, cowgirl, cowpuncher, deputy, deputy sheriff, detective, equestrian, equestrienne, fed, federal, flic, gaucho, gendarme, government man, horse soldier, horseback rider, horsebacker, horseman, horsewoman, inspector, jockey, knight, lictor, lieutenant, mace-bearer, marshal, narc, officer, patrolman, peace officer, police captain, police commissioner, police constable, police inspector, police matron, police officer, police sergeant, policeman, policewoman, portreeve, postboy, postilion, puncher, reeve, rider, roughrider, roundsman, sergeant, sergeant at arms, sheriff, steeplechaser, superintendent, tipstaff, tipstaves, trick rider, trooper, vaquero
