ine, order such changes as he deems necessary, and
report with a sketch of the outpost line to the commander of troops
when his outpost has taken up its position. "The support commander
must practice the greatest economy on men consistent with the
requirements of practical security." Instead of using outguards along
the whole front, part of it may be covered by patrols.

[Illustration: Plate #12 DIAGRAM OF OUTPOST LINE]

Outline of Field Service Regulations.

LAND FORCES OF U.S.

Regular Army.
Organized Land Militia.
Volunteer forces.

How Grouped:
Mobile Army.
Coast Artillery.

Mobile Army:

For offensive operations against enemy and so requires maximum degree
of mobility.

Basis of organization the division, a self-contained unit composed of
all necessary arms and services.

Coast Artillery:
(1) Permanent fortifications for defense against naval attack.
(2) Semi-permanent fortifications for protection of permanent from
raiders.
(3) Organization of mobile troops to prevent landing of enemy.

MILITARY INFORMATION.

Essential:
(1) To enable War Department to estimate equipment and size of force
necessary.
(2) To enable commander properly to estimate the situation in the
field of operations.

TRANSMISSION OF INFORMATION.

Wire, Signaling, Radio and Messenger:
Message.--Concise, written information sent by messenger or wire.
Source always given.--"Heard" separated from "seen."
Report.--Formal account of some enterprise.
War Diary.--Record of events kept in campaigns.
Maps.

Reconnaissance:
The work of individuals or units in gathering information.
To keep contact with the enemy--to be acquainted with the terrain;
to protect flanks and rear and guard against surprise.
Reconnaissance begins on entering theater of operations and lasts
through campaign.
Effected by patrols and air craft.

Indications of enemy:
Tracks on road.
Abandoned camps and clothing.
Infantry, thick, low cloud of dust.
Cavalry, high, thin cloud of dust.
Artillery and wagons, broken cloud.

Determination of Enemy Forces:
Timing past a given point.
Cavalry (walk), 110 per minute.
Cavalry (trot), 200 per minute.
Infantry, 175 per minute.
Artillery and wagons, 5 per minute.

Security:
Those measures taken to protect a command from enemy observation,
annoyance and surprise.
Obtained by covering the front with detachmen