The Collaborative International Dictionary of English v.0.48:

Accouterments \Ac*cou"ter*ments\, Accoutrements
\Ac*cou"tre*ments\, n. pl. [F. accoutrement, earlier also
   accoustrement, earlier also accoustrement. See Accouter.]
   Dress; trappings; equipment; specifically, the devices and
   equipments worn by soldiers.
   [1913 Webster]

         How gay with all the accouterments of war!
   [1913 Webster]