Which principle of patrolling emphasizes the importance of keeping forces safe from being detected by the enemy?

The principle of patrolling that emphasizes keeping forces safe from detection by the enemy is security. This principle involves implementing measures that ensure the safety of a unit by avoiding enemy observation and engagement. Security in the context of patrolling means using tactics such as movement techniques, terrain, and the element of surprise to remain concealed from the enemy.

By prioritizing security, a patrol can effectively gather intelligence, conduct reconnaissance, or engage in other mission objectives while minimizing the risk of enemy contact. This principle is crucial for maintaining the element of surprise and ensuring the overall effectiveness and safety of military operations. Other principles like planning and control also play significant roles in accomplishing patrol objectives, but security specifically addresses the need to remain undetected.