Which regulation is specifically for writing in the Army?

The correct choice relates specifically to regulations governing the preparation of correspondence in the Army. AR 25-50, titled "Preparing and Managing Correspondence," provides comprehensive guidelines for Army personnel on how to write, format, and manage official correspondence. This regulation is essential for ensuring clarity and consistency in written communication within the Army, which is critical for maintaining effective operations and protocols.

Understanding these guidelines is crucial for anyone involved in writing official documents, as they dictate the standards for everything from memorandums and letters to reports. Employing the rules laid out in AR 25-50 helps to uphold the professionalism expected in Army communications.

In contrast, other options focus on different areas of Army regulations. For example, AR 600-20 pertains to Army Command Policy, FM 6-22 focuses on Leadership, and AR 600-9 addresses the Army Weight Control Program—none of which specifically govern the writing and formatting of Army documents.