How is a "step" measured in Drill?

A "step" in Drill is measured from heel to heel, which is crucial for ensuring uniformity and synchronization among personnel during marching. This standard measurement allows for consistent spacing and alignment in formations, contributing to the overall precision necessary in military movements. By measuring from heel to heel, each individual in the formation can maintain the proper distance, creating a cohesive appearance and facilitating coordinated actions such as turns and pivots.

The other options do not represent the standard way of measuring a step in Drill. For instance, measuring from toe to toe could lead to inconsistent spacing as individuals might have varying shoe sizes. Similarly, knee to knee and shoulder to shoulder measurements would not provide the necessary alignment for marching, which focuses on the lower part of the body to ensure that all members move in unison from a grounded position. Therefore, measuring from heel to heel is the recognized method that supports the discipline and effectiveness of drill movements.