SIGNS—FIELD MAPS AND SKETCHES.

Telegraph LineSymbol (modified below)
Along improved road
Along unimproved road
Along trail
RailroadsSingle track
Double track
Trolley
RoadsImproved
Unimproved
Trail
Fencesbarbed wire
smooth wire
wood
stone
hedge

Bridge
Indicate character and span by abbreviations.
Example:
Meaning wooden kingpost bridge, 40 feet long, 20 feet wide, and 10feet above the water.
Streams
Indicate character by abbreviations.
Example:
Meaning a stream 15 feet wide, 8 feet deep, and not fordable.
HouseChurchSchool house
WoodsOrchardsCultivated Land
If boundary lines are fences they are indicated as such.
Brush, crops or grass, important as cover or forage
CemeteryTrees, isolated
Cut and fill— cut 10 feet deep
fill 10 feet high

Map.

CHAPTER XI.
MESSAGE BLANKS.

U. S. ARMY FIELD
MESSAGE.
No.Sent
by.
Time.Rec'd
by.
Time.Check.
(These spaces for Signal Operators only.)
Communicated by
Buzzer, Phone,
Telegraph, Wireless,
Lantern, Helio, Flag,
Cyclist, Foot Messenger,
Mounted Messenger, Motor
Car, Flying Machine.
Underscore means used.
[Name of sending detachment.]
From
At
Date Hour No
To
Received

The heading "From" is filled in with the name of the detachment sending the information: as "Officer's Patrol, 7th Cav." Messages sent on the same day from the same source to the same person are numbered consecutively. The address is written briefly, thus: "Commanding officer, Outpost, 1st Brigade." In the signature the writer's surname only and rank are given.