Final answer:
The authority to revoke a Commander's Award for Civilian Service (CE&S) lies with the issuing command or organization, as defined by their regulations. Revocation may occur if new evidence of ineligibility surfaces, following proper review procedures.
Step-by-step explanation:
The authority to revoke a CE&S (Commander's Award for Civilian Service) award after presentation usually rests with the command or organization that issued the award. The specific procedures and authority for revocation are typically outlined in the regulations or guidelines of the military or governmental body that granted the award. The decision to revoke an award can be made on the basis of new, compelling evidence that the awardee has acted in a manner that would have made them ineligible for the award in the first place, such as misconduct or criminal behavior. This action is often subject to a review process to ensure fairness and accuracy.