Which method of control would likely be used to give a timing command without needing immediate action?

The use of the "Duration" method of control allows commanders to provide a timing command that doesn't necessitate immediate action. This method is particularly effective in artillery operations where precision timing is essential for coordinated fire support or execution of maneuvers. With "Duration," the command sets a specific timeframe for when actions should take place, enabling the crew to prepare adequately without the urgency that accompanies commands requiring immediate action.

In contrast, commands like "At My Command," "Cease Loading," and "Do Not Load" typically demand immediate compliance or are related to halting operations rather than setting a future action that can be timed. Therefore, the "Duration" method stands out as the correct choice for providing a timing command that allows for measured preparation before execution.