Which term includes all written material, publications, messages, and memorandums that are sent to or from the command?

The term that encompasses all written material, publications, messages, and memorandums exchanged within the command is official correspondence. This category includes all forms of communication that relate to the command's official business and operations. Official correspondence is vital for ensuring clear communication and maintaining records within military and organizational structures. It encompasses directives, instructions, reports, and other formal documentation necessary for effective functioning and compliance with regulations.

While other types of correspondence like informal or personal correspondence exist, they do not fulfill the same official capacity or purpose that is inherent in official correspondence. Informal correspondence typically pertains to casual communication, while personal correspondence involves private communications that are not tied to official duties. Administrative correspondence is a broader term but may not cover all types of official communications, hence the distinction. Official correspondence, therefore, is the most comprehensive term that accurately describes all written materials sent to or from the command in a formal context.