The military occupational specialty (MOS) 13F is a Fire Support Specialist. These soldiers are responsible for providing artillery, mortar, and naval gunfire support to infantry and other ground units during combat. They are also skilled at gathering intelligence and locating key enemy targets.
Fire Support Specialists are also called forward observers. They are responsible for leading, supervising, or serving in intelligence activities such as target processing for artillery units and brigade maneuvers. They can be assigned to any unit with an Artillery Battalion.
Fire Support Specialists have duties such as:
Establishing communications
Encoding and decoding messages
Coordinating the strikes of targets
Selecting and occupying observation post
Orienting map and preparing terrain sketch and visibility diagram