The Collaborative International Dictionary of English v.0.48:

Artilleryman \Ar*til"ler*y*man\, n.
   A man who manages, or assists in managing, a large gun in
   firing.
   [1913 Webster]

WordNet (r) 3.0 (2006):

artilleryman
    n 1: a serviceman in the artillery [syn: artilleryman,
         cannoneer, gunner, machine gunner]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "artilleryman":
   Nimrod, archer, artillerist, bomb thrower, bombardier, bomber,
   bowman, cannoneer, carabineer, crack shot, dead shot, deadeye,
   good shot, gun, gunman, gunner, hunter, machine gunner, marksman,
   markswoman, musketeer, rifleman, sharpshooter, shooter, shot,
   sniper, targetshooter, toxophilite, trapshooter