GUARD

1. A form of security operation whose primary task is to protect the main force by fighting to gain time while also observing and reporting information, and to prevent enemy ground observation of and direct fire against the main body by reconnoitering, attacking, defending, and delaying. A guard force normally operates within the range of the main body’s indirect fire weapons. 2. A radio frequency that is normally used for emergency transmissions and is continuously monitored. UHF band: 243.0 MHZ; VHF band: 121.5 MHZ. See also cover; flank guard; screen. 3. A military or civilian individual assigned to protect personnel, equipment, or installations, or to oversee a prisoner.