and for the operation of its components while under regimental control (except such parts of the am- munition train as may be performing their supply mission under command of the munitions officer). In combat, the motor transport officer assists the service company commander in the establishment, defense, and operation of the regimental train biv- ouac, and assumes control of the bivouac and its ele- ments when the company commander is absent or incapacitated. For detailed duties of unit motor transport officer, see FM 25-10.
(3) The second-in-command assists the motor transport officer in all of his various duties and per- forms such other tasks as the motor officer may prescribe.
(4) The motor sergeant is the principal enlisted assistant of the regimental motor transport officer.
(5) The ammunition sergeant usually accompan- ies parts of the ammunition train that are under regimental control, and carries out the orders of the motor transport officer or the munitions officer relative to their operation.
(6) The platoon truckmaster assists in control- ling the movement and operation of the regimental trains, usually accompanying parts of the kitchen and baggage train while they are under regimental control.
(7) The truck driver is responsible for the habi- tual camouflage, concealment, and driver mainten- ance of his vehicle.