rt trenches,
but in holding the supporting and strong points until the
counterattack can be launched.

Liaison.--The question of liaison in battle is of the utmost
importance, and complete co-ordination of the different arms is
absolutely necessary. Each battalion sends an officer or
non-commissioned officer and a cyclist to the colonel, and each
colonel sends a soldier to the battalion commander.

The principal means of communication are the telephone, telegraph,
wireless, aeroplane, mounted messengers, autos and motorcycles; and at
the front runners, visual signals, rockets and carrier pigeons.

Each battalion commander is connected by telephone with each company
commander, with the artillery observers, with the artillery commander,
with his own colonel and with the adjacent battalions on either side.

The signallers of assaulting companies move with the company
commander. All signallers should be given a special training in
repeating a message several times to a known back station which may
not be able to reply forward.

At the commencement of the assault the pigeons and pigeon carriers
must be kept back at battalion headquarters, and sent forward as soon
as the position has been gained.

Runners can be relied upon when all other means fail. They must be
trained with their companies. Runners should be lightly equipped and
wear a distinctive mark. They must be familiar with all the principal
routes to all the principal centers within their battalion sector. The
quicker they go the safer they are. Company and platoon runners must
go forward with their respective commanders. Messages to be carried
long distances will be relayed. Never send a verbal message by a
runner; ignore any received; all messages must be written.

Company and battalion commanders must be prepared to assist artillery
liaison officers in getting their messages back. Liaison officers must
be exchanged by all the assaulting battalions with the battalion on
either flank.

Trench Orders.--(Battalion): Trenches are usually divided into a
certain number of bays; the number of men to defend these bays depends
upon the length of trench allotted to each company. Each section is
detailed to guard a certain number of bays.

Non-commissioned officers and men must always wear their equipment by
day and night. Every company will "Stand To" arms daily one-half hour
before dusk and one-half hour before dawn, and will remain until
dismissed by the co