b. Paragraph 2 - Mission gives a clear, concise statement of the signal support task.
c. Paragraph 3 - Execution describes how the signal support will occur. A concept of operation gives a brief
statement of the signal support to be carried out. In supporting field artillery unit, the initial emphasis is on
single-channel radio for command and control until located in position. Signal tasks to subordinate units describe
the support to various elements in fire support units. Coordinating instructions include information applicable to
two or more subordinate units. This may include radio silence when directed, signal center operation, radio nets,
messenger routes, and wire and cable systems.
d. Paragraph 4 -Service support discusses the administrative and logistical effort to sustain the signal
mission. Reference may be made to an administrative/logistics order.
e. Paragraph 5 -Command and signal cites the signal operation instructions (SOI) in effect and command
post locations and their axis of displacement.
4. Signal Annex Subjects. The following are some suggested subjects for inclusion in the annex, as cited in FM
24-16, Communications-Electronics, Operations, Orders, Records, and Reports. These subjects may also be
included in the unit SOP. Remember though, the signal annex should not be another address for matters covered
in the SOP.
a. References. These may include field manuals, technical manuals, regulations, the SOP, and SOI of higher
b. Training of signal personnel. Training instructions for signal personnel are limited to general statements
of responsibility. Detailed instructions are normally contained in training memorandums.
c. Administration. This is a means of promulgating and standardizing administrative procedures, to include
personnel and management, throughout the unit.
d. SIGSEC. These instructions develop and maintain a SIGSEC awareness throughout the unit. They are
limited to those instructions that apply to all elements of the command and are not contained in the SOI.
e. Physical security. These procedures develop an awareness for physical security and promulgate and
standardize procedures throughout the unit.
f. Signal centers. These instructions should include the number of signal centers to be established for
routine operations, the services they are to provide, and general procedures governing their operation and