What chapter of the SORN should the departmental duty officer review?

The correct choice focuses on the unit organization as it is crucial for the departmental duty officer to have a clear understanding of how the unit is structured. This knowledge enables the duty officer to carry out their responsibilities effectively, ensuring that operations align with the established hierarchy and designated roles within the command. The unit organization helps in understanding the chain of command, which is vital for communication and decision-making processes.

In contrast, while command responsibilities, training standards, and health and safety are all critical aspects of a well-functioning military unit, they do not provide the same foundational overview necessary for a duty officer as the unit organization does. Command responsibilities may outline what is expected of officers, training standards relate to the readiness and qualifications of personnel, and health and safety ensure a secure environment, but none of these directly inform the duty officer on how the unit itself operates and who is responsible for what. Understanding unit organization is the cornerstone for executing any of these responsibilities effectively.