In the TM Numbering System, what does the '1 number' designate?

The '1 number' in the TM (Technical Manual) Numbering System signifies the proponent for the publication, which indicates the organization or department responsible for the development, update, and maintenance of that specific manual. Each TM is organized in a way that reflects its origin, ensuring users can identify who oversees its content and accuracy. This allows for easier reference and access to technical support, as users will know where to turn for assistance regarding the manual's subject matter. Understanding this aspect of the TM numbering system is crucial for Army Motor Transport Operators, as it helps them locate the appropriate resources and support for their equipment and operations.