What does 'Guard' primarily achieve in a security operation?

In a security operation, 'Guard' primarily achieves the objective of gaining time while preventing enemy observations. This role is crucial because it allows friendly forces to prepare and respond effectively without being detected. Through the act of guarding, forces can establish a defensive posture that limits the enemy's ability to gather intelligence on their movements or intentions. This creates a buffer period that can be vital in ensuring operational success, as it allows for the coordination of reinforcements, the preparation of defensive measures, and the development of strategic planning. By denying the enemy the chance to observe or engage, operations can be conducted more effectively, facilitating smoother execution of the overall mission.