- ADP 3-28Publication
Defense Support of Civil Authorities
ADP 3-28 explains how Army forces support civil authorities at home -- disaster response, civil support, and the legal boundaries that come with domestic operations. It covers both the federal force and National Guard civil support missions. Read it before a hurricane rotation, not during one.
- AR 25-50Publication
Preparing and Managing Correspondence
AR 25-50 is the standard for Army correspondence: memorandums, letters, and the rules for signature blocks, distribution, and endorsements. It is the reference that decides arguments about formatting in an S1 shop. The 10 October 2020 edition is still the current one.
- AR 670-1Publication
Wear and Appearance of Army Uniforms and Insignia
AR 670-1 is the policy for uniform wear, grooming, and appearance. It says what is authorized; DA PAM 670-1 shows how each item is worn and where it is placed. Grooming and appearance standards have been changed by Army directives since the 2021 edition, so check for current directives before enforcing a detail.