If the PER is >= 25 meters, how many rounds are typically spotted along the observer-target line during impact registration?

For impact registration in fire support operations, particularly when the Precision Observation Range (PER) is equal to or greater than 25 meters, it's standard practice to identify at least three rounds along the observer-target line. This helps ensure a proper assessment of the effect and accuracy of the rounds fired, allowing the observer to make informed recommendations for adjustments if necessary.

Spotting multiple rounds is crucial because it provides a clearer picture of the dispersion pattern of the artillery or mortar fire, as well as the impact on the target area. The registration of rounds at this range confirms that the desired effects can be achieved reliably and assists in refining future fire missions for better target efficiency.

In this context, understanding the procedure and rationale behind spotting multiple rounds aids in the overall effectiveness and success of fire missions in support of ground operations. Therefore, stating that three rounds are typically spotted along the observer-target line when the PER is 25 meters or greater is accurate.