Which officer ensures that guard members are properly relieved?

The Commander of the Guard is responsible for ensuring that guard members are properly relieved. This officer oversees the overall operations of the guard detail and has the authority to make command decisions regarding the relief of duty personnel. Proper relief is vital in maintaining security and operational readiness; it ensures that guards are aware of pertinent information and that the security posture remains effective without gaps or lapses in coverage.

While the Sergeant of the Guard and the Officer of the Day play significant roles in the guard's function, their responsibilities focus more on day-to-day management and oversight rather than direct command of relief actions. The Corporal of the Guard assists in managing the guard but is not the final authority on ensuring relieves occur correctly. Thus, it is the Commander of the Guard who bears the ultimate responsibility for ensuring that guards are relieved in a timely and orderly manner.