What defines a supplementary command?

A supplementary command is specifically issued by squad leaders to provide guidance when squads are required to perform different movements or actions that are not uniform across the unit. This ensures that all members of a squad understand their specific tasks and can execute them correctly, even when the overall unit is not performing the same action. It emphasizes the need for clear communication to maintain synchronization within the squads, especially during complex maneuvers where precise coordination is essential. This type of command allows for flexibility and adaptability in operations, accommodating various tactical situations that might arise.

Other options do not accurately capture the essence of what supplementary commands are. For instance, supplementary commands are not solely given by the commander or applicable to all unit members simultaneously; rather, their function is limited to specific squads facing differing instructions. Moreover, they are not optional; they are an integral part of maintaining effective communication and operational efficiency among varied unit actions during a mission.