The log book will be inspected daily by the battalion commander and frequently by the brigade staff.
14. UNDERCUTTING TRENCH SIDES.—(a) The undercutting of trench sides to make shelters is forbidden.
(b) When shelters are made the required space from the ground level downwards will be cut out, and a roof, supported on reliable posts, will be made.
15. COMMUNICATIONS.—(a) Artillery lines will be laid on the north and west sides of trenches. Infantry lines on south and east.
(b) The Infantry brigade signal officer will exercise general supervision over all lines in the brigade area, and will notify Artillery brigades when any Artillery lines require attention or relaying. He will assist the Artillery whenever it may be possible to do so.
(c) All essential lines should be buried to a depth of at least 6 feet. Lines in the communication trenches should be reduced to a minimum.
(d) Lines will be clearly labeled at every hundred yards and at every junction with another line.
(e) All lines will be carefully patrolled at least once daily.
(f) One telephonist will always be on duty.
(g) Telephone communication to battalion headquarters and the company on each flank will be frequently tested.