cavalryman

from WordNet (r) 3.0 (2006)

cavalryman
    n 1: a soldier in a motorized army unit [syn: {cavalryman},
         {trooper}]
    2: a soldier mounted on horseback; "a cavalryman always takes
       good care of his mount" [syn: {cavalryman}, {trooper}]

from The Collaborative International Dictionary of English v.0.48

Cavalryman \Cav"al*ry*man\, n.; pl. {Cavalrymen}.
   One of a body of cavalry.
   [1913 Webster]