The primary role of the Artillery is to deliver timely, accurate
and effective fire in support of the manoeuvre force to accomplish
its missions.
As the Artillery is an indirect fire support system, the gunners at
the weapons do not need to see the targets in order to engage fire.
The location of the targets are provided by the forward observers
as well as elements of target acquisition unit. This information is
then passed to the command post which commands and controls the
weapons delivering the fire.
[/quote]
from the army website
