Who assumes the duties of Commander of the Guard if not assigned?

The duties of Commander of the Guard are typically assumed by the Sergeant of the Guard if no other officer is specifically assigned to that position. The Sergeant holds a higher rank than the Corporal of the Guard and is responsible for overseeing all guard operations, ensuring that procedures are followed, and maintaining the discipline and effectiveness of the guard force.

As the ranking non-commissioned officer present, the Sergeant has the requisite experience and authority to effectively manage and direct the guard. This includes coordinating shifts, addressing security concerns, and implementing command policies, which are all essential for maintaining order and security posture.

The other options involve positions that, while important, do not typically carry the responsibilities associated with assuming command of the guard. The Corporal of the Guard, although in a leading position, operates under the authority of the Sergeant. The Lieutenant on duty and the First Sergeant have distinct roles that may not directly pertain to guard command, focusing instead on other aspects of leadership and administration within the unit.