What is the significance of "At My Command" in a fire mission?

The phrase "At My Command" in the context of a fire mission signifies that the observer has the authority to initiate the fire when they deem it appropriate. This means that the observer has assessed the situation, considered the target, and is ready to give the order for the fire to commence based on their tactical judgment at that moment.

This phrase emphasizes the flexibility and control the observer has over the timing of the fire. It allows the observer to wait for the most opportune moment to ensure effectiveness and minimize the risk of collateral damage or friendly fire. The observer might take into account changing battlefield conditions or the status of friendly forces before making the decision to fire.

In contrast, the other options represent different commands that do not convey the same level of discretion or authority to the observer. "Fire immediately" indicates a pre-determined urgency without the observer's control over timing, while "Hold fire until further notice" and "Engage after additional verification" suggest that the observer must wait for further instructions or confirmation before proceeding, which contrasts with the proactive authority implied by "At My Command."