ANSWER KEY AND FEEDBACK
Correct Answer and Feedback
The basic symbol is modified with a service indicator when preparing graphics for
interservice use. Symbols for Army units and installations require no modifying indicator.
The basic symbol is assumed to represent an Army component unless otherwise modified
(page 1-7, para 2b(4)(b))
When you have different colors available, you use color as a standard distinguishing part of
the symbol. You use the color yellow to indicate chemical, biological, or radiological areas
of friendly or enemy forces (page 1-12, para 3c).
In the surrounding fields
You use fields whenever necessary to provide additional information for the symbol being
used. Some fields are mandatory, some are optional (page 1-13, para 4).
Obstacles are natural or man-made obstructions that hinder the movement of forces. In
this case, the obstacle is an antitank ditch reinforced with a minefield (page 1-15, para 7b
and page 1-16, figure 1-17).