FSBs follow a number of plans, their shape and construction varying based on the terrain they occupy and the projected garrison.
[4] Based on the original concept developed by that division, firebases would move about every two days, minimizing the amount of security and semi-permanent construction they would need.
Their main components varied by size: a typical FSB usually had a battery of six 105 millimeter or 155 mm howitzers, a platoon of engineers permanently on station for construction and maintenance projects, at least two landing pads for helicopters (a smaller VIP pad and at least one resupply pad), a Tactical Operations Center (TOC), an aid station staffed with medics, a communications bunker, and a company of infantry serving as the defense garrison.
Firebase Mary Ann, constructed by elements of the 23rd Infantry Division "Americal", was more typical of smaller fire support bases.
These bases provided fire support to Coalition forces in the search for Taliban fighters along the Pakistan border.