How far apart are soldiers positioned in a Close Interval formation?

In a Close Interval formation, soldiers are positioned with their feet in a way that aligns their heels with the other soldier's hips. This specific measurement ensures that soldiers maintain proximity while still adhering to a standardized spacing that fosters cohesion and orderly movement. The heel placement at the hip allows for efficient communication and signaling among team members, making it easier to maintain formations, especially in tactical situations.

Understanding this correct answer helps reinforce the importance of precise spacing within military formations, which is crucial for operational effectiveness, discipline, and the ability to respond quickly to commands. Other spacing measures, like those defined by arm's length or palm distance, do not adhere to the established military protocol for Close Interval spacing and would result in either too much space or restrict comfort and movement distance, which is not desirable in a combat or training environment.