FM 4-0 is listed as current in the Army Publishing Directorate catalog (publication date 2026-03-20).

Where do I download the official FM 4-0?

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

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FM 4-0 — SUSTAINMENT OPERATIONS

FM 4-0 is listed as current Current
in the Army Publishing Directorate catalog as of our last index refresh (2026-07-11).

Branch	U.S. Army
Series	FM
Publication date	2026-03-20 (0.3 years ago)
Status	Current
Proponent / OPR	T2COM
Source of record	Army Publishing Directorate

Official document (Army Publishing Directorate)

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Nearby in the FM series

FM 3-96 — BRIGADE COMBAT TEAM Current
FM 3-98 — RECONNAISSANCE AND SECURITY OPERATIONS Current
FM 3-99 — AIRBORNE AND AIR ASSAULT OPERATIONS (THIS ITEM IS PUBLISHED W/ BASIC INCL C1) Current
FM 4-02 — ARMY HEALTH SYSTEM (THIS ITEM IS PUBLISHED W/ BASIC INCL C2) Current
FM 4-1 — HUMAN RESOURCES SUPPORT 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 FM 4-0 in an official product.