During which command do personnel release the bolt forward after ensuring the magazine is filled?

The appropriate command for personnel to release the bolt forward after ensuring that the magazine is filled is "LOAD." This command is specifically used to instruct individuals to load their weapon by inserting a magazine that is filled with ammunition into the rifle. Following the loading of the magazine, personnel will then release the bolt forward, which chambers a round and prepares the weapon for firing.

This step is crucial in ensuring that the rifle is operational and ready for engagement if required. The command focuses on the immediate action of loading and securing the weapon, emphasizing the importance of correctly performing this task before moving on to further preparations for a firearm operation.

In contrast, the other commands involve additional steps or contexts that do not specifically call for the immediate action of releasing the bolt after loading. For example, "MAKE READY" may imply additional preparations beyond just loading the magazine, while "LOAD AND MAKE READY" indicates a combination of preparations, and "FIRE" focuses solely on discharging the weapon, omitting the specific action of loading.