b. Direction of Fire
(1) A principal direction of fire is represented by a solid arrow. To prevent
confusion with similar symbols, the symbol representing a principal direction of
fire is always shown together with the appropriate weapon symbol.
(2) Symbols for sectors of fire and principal directions of fire are often
combined.
(3) A special principal direction of fire symbol is used to indicate final
protective lines. Heavily shaded portions along the principal direction of fire
symbol indicate areas of grazing fire.
T
he final protective line symbol is usually combined with the sector of fire and
weapon symbols.
c. Targets
(1) Point targets of less than 100 yards
(2) Linear targets
AII-5