What is the primary purpose of a security task known as "Screen"?

The primary purpose of a security task known as "Screen" is to provide early warning to the main body. This task is conducted ahead of the main force and is essential for monitoring enemy movements and providing critical information about potential threats. The screening force acts as the eyes and ears of the main body, allowing for timely reactions to enemy activities and facilitating informed decision-making about subsequent operations.

In a screening operation, the focus is on reconnaissance and detection, rather than direct engagement with the enemy. The aim is to maintain a protective perimeter while gathering intelligence that keeps the main force informed of any developments in the operational environment. This early warning capability is vital for ensuring the safety and effectiveness of follow-on forces and protecting against surprise attacks.

Understanding this aspect of screening helps emphasize its role compared to other security tasks, which may include more direct combat engagement or defensive actions to protect the main body after enemy contact is established.