AR 5-21 is listed as current in the Army Publishing Directorate catalog (publication date 2018-06-29).

Where do I download the official AR 5-21?

The official copy is published on Army Publishing Directorate (https://armypubs.army.mil).

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AR 5-21 — RAND ARROYO CENTER

AR 5-21 is listed as current Current
in the Army Publishing Directorate catalog as of our last index refresh (2026-07-11). Note: its publication date is 2018-06-29 — 8 years old — so check for newer interim changes before citing it.

Branch	U.S. Army
Series	AR
Publication date	2018-06-29 (8.0 years ago)
Status	Current
Proponent / OPR	G-8
Source of record	Army Publishing Directorate

Official document (Army Publishing Directorate)

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Nearby in the AR series

AR 5-12 — ARMY USE OF THE ELECTROMAGNETIC SPECTRUM Current
AR 5-13 — ARMY MUNITIONS REQUIREMENTS, PRIORITIZATION, AND AUTHORIZATIONS MANAGEMENT POLICY Current
AR 5-18 — ARMY STATIONING AND INSTALLATION PLAN Current
AR 5-22 — THE ARMY FORCE MODERNIZATION PROPONENT SYSTEM Current
AR 5-25 — ARMY WEATHER FUNCTIONAL ACTIVITIES Current

This is an unofficial index built from the public catalog. The controlling copy is always the one on Army Publishing Directorate — verify there before citing AR 5-21 in an official product.