What does the command 'Rest' signify in a military formation?

The command 'Rest' signifies that personnel in a military formation are to stand at ease. When this command is given, service members are allowed to relax while still maintaining their position in formation. This means they can adjust their posture, shift their weight, and engage in a more comfortable stance as long as they remain alert and ready to respond to further commands.

The command contrasts with more formal positions, such as "Attention," where strict posture and focus are required. Knowing this distinction helps clarify the importance of remaining aware of one's surroundings even when at ease. Understanding the context of formations can also illustrate the levels of readiness expected at various times in military operations and ceremonies.