What is the aim of the "Guard" security task?

The aim of the "Guard" security task is indeed to protect the main body through direct engagement. This task involves positioning units in a way that they can effectively defend against enemy forces while ensuring the safety of the main body, which may be a larger unit or force involved in an operation. Guards are often deployed to provide an initial line of defense, allowing the main forces to operate without the immediate threat of enemy engagement. By focusing on direct engagement, the Guard task enables friendly forces to repel threats and maintain operational security.

In understanding why this option is the correct choice, it's important to recognize the role and responsibilities assigned to a Guard unit, which are centered on active defense and protection of critical assets or personnel. This contrasts with other tasks, such as reconnaissance or maneuver operations, which have different primary objectives not focused on direct engagement for protection.