JFO

An artillery observer is a soldier responsible for directing artillery fire and close air support (ground attack by aircraft) onto enemy positions. Because artillery is an indirect-fire weapon system, the guns are rarely in line-of-sight of their target, often located tens of miles away. The observer serves as the eyes of the artillery battery, calling in target locations and adjustments to the Fire Direction Center (FDC) via radio or (less commonly) landline. The FDC then translates the observer's orders into firing solutions for the battery's cannons. Artillery observers are often deployed with combat arms maneuver units, typically infantry companies or armored squadrons.
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