What command begins the reciprocal lay process in mortar operations?

The command that initiates the reciprocal lay process in mortar operations is "Aim point this instrument." This command signifies that the operator should focus on the designated aim point and align the mortar accordingly. The reciprocal lay process requires precise aiming to ensure accurate targeting and effective fire support, and this command serves as a clear instruction to initiate that critical task.

Choosing this command helps establish a clear point for the mortarman to look towards, allowing for effective triangulation of the lay. It reinforces the need for visual confirmation of the aim point, which is vital in ensuring that subsequent calculations and adjustments are based on the correct reference. This focus on the aim point is crucial for maintaining accuracy throughout the reciprocal lay process, ultimately contributing to successful mortar operations in a combat scenario.