The Collaborative International Dictionary of English v.0.48:

Impedimenta \Im*ped`i*men"ta\, n. pl. [L. See Impediment,
   Impede.]
   Things which impede or hinder progress; incumbrances;
   baggage; specif. (Mil.), the supply trains which must
   accompany an army.

         On the plains they will have horses dragging travoises,
         dogs with travoises, women and children loaded with
         impedimenta.                             --Julian
                                                  Ralph.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

impedimenta
    n 1: any structure that makes progress difficult [syn:
         obstruction, obstructor, obstructer, impediment,
         impedimenta]
    2: the baggage and equipment carried by an army

Moby Thesaurus II by Grady Ward, 1.0:

69 Moby Thesaurus words for "impedimenta":
   accouterments, apparatus, appliances, appointments, appurtenances,
   armament, bag and baggage, baggage, burden, burthen, cargo, charge,
   consignment, conveniences, cross, cumbrance, deadweight,
   difficulty, disadvantage, duffel, dunnage, embarrassment,
   encumbrance, equipage, equipment, facilities, facility, fittings,
   fixtures, freight, freightage, furnishings, furniture, gear, goods,
   hamper, handicap, impediment, imposition, inconvenience,
   installations, kit, lading, load, luggage, lumber, machinery,
   materiel, munition, munitions, onus, outfit, pack, paraphernalia,
   payload, penalty, plant, plumbing, rig, rigging, shipment,
   stock-in-trade, tackle, things, traps, trouble, utensils, weight,
   white elephant