Working Parties

The infantryman will always be called upon to construct the trench which he is to occupy. Each company is provided with portable tools, which the men carry, and each infantry regiment is provided with tools for the purpose. The digging tools consist of picks and shovels.

When it has been decided to locate fire trenches along a certain line officers will lay out the cutting lines and mark them with tape or otherwise. A company will be assigned for the construction of a definite section of the trench.

Let us work out the procedure, assuming that the work may go on unmolested by the enemy. Such, however, is not usually the case. The enemy will do anything in his power to prevent construction work. If, however, we are familiar with the details of the work and know how to go about it in an orderly and systematic manner under conditions of noninterference by the enemy, we will be able to carry out these details of organization and procedure under more or less trying conditions when the time comes.

Officers have established the trace of the trench and marked the cutting lines. It is the ordinary traversed type, 18 feet bays with traverses 5 feet wide and 5 feet deep, as shown in Plate 14.

The company is composed of, say twelve squads organized into three platoons of four squads each. Six bays of the trench have been assigned to the organization for construction. This gives a task to each platoon of two bays, including one complete traverse and a half traverse on each flank.

Tools have been issued to the first and third squads of each platoon, the front rank men carrying picks and the rear rank men shovels.

The company is marched in column of squads to the site of the trench, approaching it from the rear, and halted with the head of the column fifteen paces in rear of and opposite the right of the section assigned; that is, in rear of the first bay of the section. The second platoon is then conducted by the platoon commander and halted with its head opposite the third bay. The third platoon is in like manner conducted to the rear of the fifth bay. Each platoon commander then has the two rear squads of his platoon, conducted to a point behind the bay on his left, i. e., the second, fourth and sixth respectively. This allows two squads for the work in each bay, the leading squad furnishing the first relief and the rear squad the second.

The leading squad of each column is then marched to a point two paces in rear of the rear cutting line of the trench, where they take off their packs and lay their rifles on them. The corporal and his rear rank man fall out. The corporal assigns tasks, number ones to the first 2-yard section, number twos to the second and number threes the third.

The tasks are shown in Plate 39. The corporal superintends the work. Number 4 rear rank marks out the cutting lines with his shovel around the traverses and starts work on them.

Experience has shown that the best method of dividing up the work is to group the men in pairs, one man with a pick and one with a shovel and to prescribe that they relieve each other.

The leading squads assigned to each bay work at top speed for 30 minutes. At the end of the twenty-eighth minute the corporal of the rear squad brings his men up and deploys them. At a signal from the platoon commander the men of the first and third squads drop their tools, get out of the trench, and proceed to the rear, where they rest. The men of the second and fourth squads jump into the trench and take up the task. At the end of another 30 minutes this procedure is again carried out.

This scheme of assigning tasks and procedure was given an exhaustive test in 1915 in the course of testing out various types of intrenching tools. It worked to perfection.

The bays are first completed, after which the traverses begun by No. 4 rear rank are finished up. Great care should be taken to make the dimensions of the trench as accurate as possible. The squad leader is held responsible for this. He should provide himself with two sticks. On one the following lengths are laid off: 1 foot, width of berms, and height of parapet; 1 foot 4 inches, width of firing banquet, height of firing banquet above bottom of trench, and width of bottom of trench. The other stick has the following lengths measured on it: 4 feet, depth of trench from ground surface to the top of firing banquet; 5 feet 4 inches, depth of trench from ground surface to bottom of trench. (See Plate 15 for dimensions of standing trench.)

When the circumstances are such that the work of trench construction is interfered with by the enemy, a modification of the system outlined here will have to be made, but the details should be adhered to as closely as possible.

When night work is necessary the trace should be staked out before complete darkness sets in. If the trace can only be made after dark, visible reference points needed with white paper, white tape or screened flashlights may be utilized. Stick to the details of the deployment, the laying out of tasks and the procedure as indicated for day work as closely as possible. Avoid making any more noise than is absolutely necessary; allow no smoking and require such conversation as is necessary to be made in whispers. Protect the workers by a system of patrols to the front.

Noncommissioned officers are held responsible for a systematic and orderly execution of the work being performed by their units. The captain cannot be everywhere along the line. He has to depend upon the platoon and squad leaders in the work. That is why you should study it and know about it so as to be able to make good when the time comes.