What action is performed when the command 'Attention' is given?

When the command "Attention" is given, the correct action is for individuals to straighten up and face forward. This command signals service members to cease movement, stand in a position of readiness, and show proper posture. The main purpose of this command is to instill discipline and uniformity, ensuring that all personnel are standing upright with their heels together, toes pointing outward at a 45-degree angle, with arms at their sides or slightly forward. Adhering to this position demonstrates respect for authority and readiness to receive further commands.

In contrast, the other options do not encapsulate the intent and requirements of this command; standing at ease implies a less formal posture, preparing to march suggests a specific upcoming movement, and turning to the right indicates a change in direction, none of which align with the expectations set by the command "Attention."