The Collaborative International Dictionary of English v.0.48:

Auxiliar \Aux*il"iar\ (?; 106), a. [L. auxiliaris: cf. F.
   auxiliaire. See Auxiliary.]
   Auxiliary. [Archaic]
   [1913 Webster]

         The auxiliar troops and Trojan hosts appear. --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Auxiliar \Aux*il"iar\, n.
   An auxiliary. [Archaic] --Milton.
   [1913 Webster]