How does a commander take back a preparatory command?

In military drill and ceremony, when a commander needs to take back a preparatory command, the appropriate method is to issue the command "As you were." This command serves to inform the unit that the previous preparatory command has been revoked and that they should revert to their last position or action before the potentially confusing command was given. It effectively negates the earlier instruction, ensuring clarity and preventing any improper movements or responses from the unit.

Using "As you were" maintains continuity and discipline within the ranks, allowing for immediate correction while minimizing misunderstanding. This command is fundamental in drill and ceremony situations, ensuring that commands can be effectively managed and executed. The other options may not convey the same level of clarity or authority necessary for the task.