Which type of round is identified as M879?

The identification of the M879 round is associated with the FRTC, which stands for "Fuze, Rapid Targeting Capability." This round is specifically designed for training and familiarization purposes, providing a cost-effective option for the live-fire practice of mortar systems without the use of high explosive munitions.

Understanding the FRTC allows military personnel to simulate realistic firing conditions while ensuring safety and optimizing training resources. This makes it distinct from the other types of rounds mentioned. For example, high explosive rounds are designed to produce a significant explosive effect, and illumination rounds are used to provide light for battlefield visibility. SRTC would typically refer to a different classification of training round, which is not applicable to M879.

Thus, the correct identification of the M879 round as a FRTC reflects its role in enhancing training without the concerns associated with explosive munitions.