Which command is used to signal soldiers to come to attention?

The command used to signal soldiers to come to attention is "Attention." This command has a clear and direct purpose within military drill and ceremony. When given, soldiers are required to stand straight, feet together, and eyes forward, embodying the military's standards of discipline and readiness. The command "Attention" commands immediate compliance and indicates that the individual or group must focus on an upcoming command or instruction.

The other commands mentioned serve different purposes within military protocol. For example, "Fall In" is used to assemble troops, while "Stand At Ease" allows soldiers to relax slightly while maintaining a military posture. "At Ease" permits soldiers to relax further, but they must remain in the vicinity of their commander's voice. Thus, each command has its specific context and application, with "Attention" being distinctly aimed at bringing soldiers to their most alert and prepared state.