Which kind of staff officer has direct access to the commander?

Personal staff officers have direct access to the commander because they are directly assigned to assist the commander in their personal and executive functions. Their role typically involves providing support that aids in decision-making, strategic planning, and day-to-day operations directly related to the commander's requirements and priorities. This close relationship allows personal staff officers to communicate directly with the commander and deliver immediate feedback or assistance.

Other categories of staff officers, such as administrative, operational, and technical staff officers, have essential roles within the organization, but their functions generally involve indirect communication with the commander. Administrative staff officers focus on the management and organization of administrative tasks, operational staff officers concentrate on planning and managing operations, and technical staff officers provide specialized knowledge and expertise. While these roles are crucial for the overall military structure and efficiency, they do not typically maintain the same level of direct access to the commander as personal staff officers do.