Which command is not an authorized command for announcing execution?

The correct choice is "Proceed," as this command is not recognized as an authorized command for announcing execution in gunnery operations. In the context of military fire commands, each term has a specific role and meaning to ensure clarity and uniformity in communication.

The command "Fire" clearly indicates the action required, prompting immediate engagement with the target. "On the Way" is used to inform units that the rounds have been launched and are en route to the target, providing situational awareness. "Fire and Adjust" directs the gunners to engage a target while also being prepared to adjust their fire based on the observations of the effects. "Proceed," however, lacks the specificity needed and does not convey an immediate action related to the firing sequence, making it unsuitable for such contexts.

Thus, recognizing the defined phrases critical for effective operational command helps maintain order and efficiency during engagements.