The Collaborative International Dictionary of English v.0.48:

Demobilization \De*mob`i*li*za"tion\, n. [Cf. F.
   d['e]mobilisation. See Mobilization.] (Mil.)
   The disorganization or disarming of troops which have
   previously been mobilized or called into active service; the
   change from a war footing to a peace footing.
   [1913 Webster]

WordNet (r) 3.0 (2006):

demobilization
    n 1: act of changing from a war basis to a peace basis including
         disbanding or discharging troops; "demobilization of
         factories"; "immediate demobilization of the reserves"
         [syn: demobilization, demobilisation] [ant:
         militarisation, militarization, mobilisation,
         mobilization]

Moby Thesaurus II by Grady Ward, 1.0:

48 Moby Thesaurus words for "demobilization":
   breakup, deactivation, demilitarization, detachment, diaspora,
   disarmament, disbanding, disbandment, discharge, disintegration,
   dismissal, disorganization, dispersal, dispersion, dissolution,
   mustering out, parole, parting, reconversion,
   reduction of armaments, release, separation, split-up, unbinding,
   unbolting, unbridling, unbuckling, uncaging, unchaining,
   unfettering, ungagging, unhanding, unharnessing, unhobbling,
   unlashing, unlatching, unleashing, unlocking, unloosing,
   unmanacling, unmuzzling, unpenning, unshackling, unstrapping,
   untethering, untrussing, untying, unyoking