Exchange of ordnance equipment is usually effected at the ordnance collecting point which is established in the vicinity of the army ammunition supply point, though it may be accomplished at more forward lo- cations. Repair is usually effected in the bivouac of the ordnance maintenance unit but may be accom-
plished at more forward locations. b. Other light weight equipment.
usually send other light weight equipment requiring repair or replacement to the train bivouac by kitchen trucks or other transport going to the rear. Articles which cannot be repaired locally by armorer-artifi- cers will be sent by the supply section of the service company to the appropriate division supply service, where repair or replacement is effected.
c. Heavy and bulky equipment. The extent of damage, and location of heavy and bulky equipment which it is impracticable to move, should be reported through maintenance or supply channels so that it may be repaired on the spot by personnel of the appropriate service, or replaced by a similar article.
34. DESTRUCTION OF VEHICLES AND OTHER MATERIEL. a. General. (1) When terrain is being abandoned to the enemy and the evacuation of motor vehicles and other equipment is impossible, such materiel must be destroyed, whether in operating condition or not, in order to deny its use to the enemy. The destruction of materiel is a command decision to be implemented only on authority dele- gated by the division or higher commander.