What does a 'line of departure' indicate in patrolling?

The term 'line of departure' refers specifically to the point from which a patrol begins its mission. This concept is crucial in military operations, as it marks the boundary that soldiers must cross to initiate their planned actions, such as advancing towards the enemy or executing reconnaissance tasks. Establishing a clear line of departure helps ensure that all personnel understand when the mission has officially begun and serves as a reference for timing and coordination among different units. This clear demarcation is vital for maintaining operational effectiveness and minimizing confusion during the execution of the patrol.