What actions should be taken on the command "Dismissed"?

When the command "Dismissed" is given, it signifies that personnel are released from their duties, but the expectation is that they maintain military decorum as they exit the formation. The appropriate response of taking one step back, halting, and giving the correct greeting demonstrates respect for the authority delivering the command and acknowledges the current rank structure.

This action maintains the professionalism associated with military customs, ensuring that members uphold a sense of discipline even when dismissed. It is essential for maintaining order and respect within the ranks, reinforcing the importance of acknowledging superiors and fellow service members before leaving.

While the other options might suggest alternative actions, they do not align with the expected military etiquette. For instance, simply falling out may lack the formality expected in a military setting, and facing about could imply confusion about the command's intent. Thus, the action of step back, halt, and greet is not only correct but essential for preserving the dignity of the formation and adheres to traditional military conduct.