Wikipedia
Fire support is long-range firepower provided to a front-line military unit. Typically, fire support is provided by artillery or close air support (usually directed by a forward observer), and is used to shape the battlefield or, more optimistically, define the battle. Warships, for example, have long provided naval gunfire support. Artillery observers allow adjusting fire. Fire support has been used since the advent of cannons in warfare as artillery. Fire support, as an extension, is the marriage of artillery to the forces in contact. It is the direct ability to properly use artillery. It is distinct from direct fire, which is provided by the forces in contact.
Line companies in standard Heavy Brigade Combat Teams of the US Army often use Fire Support Teams (FSTs) mounted in forward support vehicles to observe and adjust fire.
Usage examples of "fire support".
For two weeks, the KLA fed in reinforcements, Albanian artillery provided fire support, and NATO warplanes hammered the Serbian positions--to no avail.
Even as she spoke, high access ports in the docking bay bulkheads slid aside to reveal the batteries that provided fire support in hostile landings.
With eight New Republic starfighter squadrons, two cruisers, and a pair of frigates close behind him, Luke carried the battle to the enemy and called for long-range fire support.
They would be used for direct fire support at the front of the mall and then later in the parking lot.
After dark on Saturday and Sunday, another F-117, also invisible to Iraqi radar, would show up to orbit overhead like a guardian angel to provide fire support if the eight-man unit was detected by an Iraqi patrol while on the move.
For two weeks, the KLA fed in reinforcements, Albanian artillery provided fire support, and NATO warplanes hammered the Serbian positions—.
You'll need fire support for the mobile infantry battalion and mechanized regiment that are going to cap the bottle along the San Pedro River.
Cross the river, climb the ridge and give them on call direct fire support.
Tyler of the Irish Guards, whose tanks were to give fire support, was appalled by the whole concept.
Thus far he had been able to call in significant air and fire support on advancing GIR formations and avoid capture or death.
All three of the panzers might be able to provide at least fire support.