Which movements in marching require a 15-inch step?

The movements in marching that require a 15-inch step are half step, left step, right step, and backward march. Each of these movements utilizes a specific marching step length to maintain uniformity and precision in formation. The 15-inch step is particularly significant for these types of movements because it allows for short, controlled strides that facilitate changes in direction and pace without disrupting the formation's integrity.

In the case of half step, this shorter stride is essential for making micro-adjustments in position while maintaining alignment with the rest of the unit. Similarly, the left step and right step involve lateral movements that require precision to ensure that all members of the unit remain in alignment. Backward march, too, relies on the 15-inch step, allowing individuals to retreat gracefully while maintaining formation and discipline.

The other choices focus on different aspects of drill and ceremonies. For instance, the first option includes movements like forward march and about face, which typically use a longer step, while parade rest and attention involve different postures rather than marching steps. Quick time and double time also employ distinct step measures, with quick time generally being a 30-inch step and double time significantly more than that, further distinguishing them from the 15-inch step used in the correct movements