Which graphic control measures are necessary for a passage of lines?

In the context of a passage of lines, the necessary graphic control measures include the identification of specific points that aid in the transition between different units. These points are SP (Start Point), RP (Release Point), and PP (Passage Point).

The Start Point is where the unit begins its movement toward the passage of lines, while the Release Point marks when the unit is given the authority to pass through the lines. Finally, the Passage Point is the designated location where the actual passage occurs. These control measures are crucial because they help to ensure coordination and synchronization between moving units and those already in position, thereby minimizing the risk of confusion or friendly fire during the maneuver.

While lane or gap definitions, timing and location indicators, and central command objectives are important in various operational contexts, they do not specifically address the necessary control measures for ensuring a smooth and effective passage of lines.