Which of the following is NOT a benefit of conducting reconnaissance?

Establishing strong defensive lines is not a direct benefit of conducting reconnaissance. While reconnaissance provides crucial information about enemy positions, terrain advantages, and potential risks, which can inform decisions related to defense, it does not itself establish defensive lines. Instead, reconnaissance serves to gather intelligence that can help commanders understand the battlefield and make informed decisions about how and where to position their forces effectively. This collected intelligence might influence the establishment of defensive lines, but it is not an outcome of the reconnaissance process itself.