The Collaborative International Dictionary of English v.0.48:

Regiment \Reg"i*ment\ (-ment), v. t. [imp. & p. p. Regimented;
   p. pr. & vb. n. Regimenting.]
   1. To form into a regiment or into regiments. --Washington.
      [1913 Webster]
      [Webster 1913 Suppl.]

   2. To form into classified units or bodies; to systematize
      according to classes, districts or the like.

            The people are organized or regimented into bodies,
            and special functions are relegated to the several
            units.                                --J. W.
                                                  Powell.
      [Webster 1913 Suppl.]

   3. To organize and manage in a uniform and rigid manner; to
      control with a strict discipline.
      [PJC]

WordNet (r) 3.0 (2006):

regimented
    adj 1: strictly controlled