What is the final command given by the base mortar regarding aiming stakes?

The final command given by the base mortar regarding aiming stakes is to refer to either 2800 or 3200 mils to place out aiming stakes. This instruction is crucial because it provides the specific angular reference points that guides the placement of aiming stakes, ensuring the mortars are accurately aimed at the intended targets.

Aiming stakes serve as essential markers that indicate the line of fire for the mortars. By referring to these specific measurements in mils, the crew can effectively align the mortars to achieve a precise trajectory for their shells. This level of detail is vital in artillery operations, where precision is key to successful target engagement and minimizing collateral damage.

The other options, while relevant to mortar operations, do not specifically focus on the critical act of placing out aiming stakes or do not provide the necessary information on how to do it accurately. For instance, preparing for shelling or setting targets may involve other steps but do not directly address the command regarding aiming stakes.