The 14th Marine Regiment (14th Marines) is a reserve artillery

Artillery

Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

 regiment of the United States Marine Corps

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 comprising four firing battalions and a headquarters battalion. The regiment is based in Fort Worth, Texas

Fort Worth, Texas

Fort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and...

 however its units are dispersed among 19 different sites in 13 states. Its primary weapon system is the M777A2 Howitzer

M777 howitzer

The M777 howitzer is a towed 155 mm artillery piece, successor to the M198 howitzer in the United States Marine Corps and United States Army. The M777 is also used by the Canadian Army, and has been in action in Afghanistan since February 2006 along with the associated GPS-guided Excalibur...

 with a maximum effective range of 30 km however two of its battalions will be converted to fire the High Mobility Artillery Rocket System

High Mobility Artillery rocket system

The M142 High Mobility Artillery Rocket System is a U.S. light multiple rocket launcher mounted on a truck.The HIMARS carries six rockets or one Army Tactical Missile System missile on the U.S. Army's new Family of Medium Tactical Vehicles five-ton truck, and can launch the entire M270 Multiple...

 (HIMARS) weapon system.
14th Marine Regiment provides the Marine Air Ground Task Force (MAGTF) with a Force Artillery Headquarters in order to command, control, and coordinate Force Artillery delivered fires.