Are they just Infantry with a little more training, true engineers without all the training or supply personnel?
Section IV
AMMUNITION AND PIONEER PLATOON
58.
REFERENCES. For training in simple field engineering and field expedients, installing land mines and booby traps, and ammunition supply, see FMs 5-15, 5-30, 5-31, 7-30, 7-35, and 25-10.
59.
COMPOSITION. For organization, equipment, armament, and transportation, see T/O and E 7-16.
60.
FUNCTIONS. The ammunition and pioneer platoon is concerned with the ammunition supply of the battalion, the execution of simple field engineering tasks not requiring the technical training and special equipment of engineer troops, and the installation and breaching of mine fields. The platoon leader assigns duties to members of the platoon in accordance with the requirements of the situation after consultation with battalion S-4. During combat the platoon, under the supervision of battalion S-4, operates the battalion ammunition supply point and uses this point as a base for all its activities.
a.
Ammunition supply. In combat the platoon leader makes available to the battalion S-4 such portion of the platoon as is necessary for ammunition supply. The platoon operates the battalion ammunition service as directed by the battalion S-4, loads and unloads ammunition vehicles, and when the situation does not permit the transportation of ammunition by weapon carrier beyond the battalion ammunition supply point, carries the ammunition forward by hand to the company areas where it is taken over by company ammunition bearers. It may carry the ammunition directly to the weapons. Personnel may be attached to one or more subordinate units when it appears that considerable movement of ammunition by hand will be necessary. They may also accompany empty ammunition vehicles to assist in loading them at the regimental ammunition supply point.
b.
Pioneer work. The pioneer duties of the platoon include minor road repair, bridging of small streams and ditches, temporary repair of small bridges and culverts, making ravines and ditches passable for motor vehicles, maintenance of crossings at fords, elimination of obstructions and obstacles to motor vehicles, marking routes and localities, execution of minor demolitions, and execution of such field expedients as are necessary for the road and cross-country movement of the battalion vehicles. On the march, when engineers are not attached, the platoon may be divided into two groups. The first group is employed near the head of the battalion for minor road maintenance and repairs and for removing obstacles and obstructions. The second group accompanies the battalion trains and assists their movement. During combat a portion of the platoon will usually be employed on pioneer tasks in order to assist the forward movement of vehicles.
c.
Installation and breaching of mine fields. The platoon will be prepared to: lay, mark and record mine fields; recognize all types of mines and booby traps used by friendly and enemy troops; disarm, lift and destroy activated antitank and antipersonnel mines and booby traps of all types used by friendly and enemy troops; and breach extensive mine fields, The platoon is furnished with portable mine-detector sets,