Fire Support is a military term referring to long-range firepower provided to a front-line unit. Typically, fire support is provided by artillery or aircraft, and is used to soften or weaken the enemy before or during an assault.
A prime example of is the use of artillery to bombard enemy infantry and trenches before an infantry assault during World War I. Ideally, the artillery kills and disorganizes many of the enemy, allowing for a successful assault with fewer casualties.
Firesupport is used to destroy, neutralize or to suppress the enemy, cover a friendly troops advance or withdrawl, etc. There are 4 basic roles for the firesupport: Support troops in contact with the enemy - Support the force commanders battle plan - Synchronize firesupport - Sustain firesupport.
When requesting firesupport the speed is of the essence and therefor a demand of firesupport should be as simple yet as detailed as possible in the first report.
To correct firesupport that is faulty - the startingpoint should be the correct position according to the map, - "Adjust fire, to far (or to short) 100m, left (or right) 200m", and since you gave the firesupport command the enemy position and your position they can quickly adjust the fire.
Supportingfire from artillery at other locations as well as from gunships and tactical air elements was arranged around the firesupport base perimeter.
Artillery was fired at these areas and, as apprehension of an impending attack grew, the officer in command, Major Joseph E. Hacia, executive officer of the 3d Battalion, 22d Infantry, ordered interdicting fire from supportingartillery on trails, road junctions, and likely assembly areas.
Co-ordinated with the attack by fire, the enemy launched a battalion-size ground attack from the south and west, which was met by a heavy volume of grazing fire from the defenders.