What is the cadence and length of step for double-time?

The correct choice specifies a cadence of 180 steps per minute with a step length of 36 inches for double-time. This standard is rooted in military marching techniques, which aim for speed and efficiency during movement.

In double-time, the increased cadence allows troops to move more quickly while maintaining formation. The step length of 36 inches complements this speed by providing a significant range per stride, which is crucial for maintaining momentum and ensuring that troops can cover ground effectively. This combination of cadence and step length is designed to maximize the effectiveness of a unit's movement in various operational scenarios, allowing for rapid deployment and maneuvering on the battlefield.

Understanding this standard is essential not just for physical training, but for coordination during drills and operations, ensuring that all personnel move in synchronization which is critical in maintaining unit cohesion in dynamic environments.