ATP 1-20 is listed as current in the Army Publishing Directorate catalog (publication date 2014-06-09).

Where do I download the official ATP 1-20?

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

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ATP 1-20 — MILITARY HISTORY OPERATIONS (THIS ITEM IS PUBLISHED W/ BASIC INCL C1)

ATP 1-20 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 2014-06-09 — 12 years old — so check for newer interim changes before citing it.

Branch	U.S. Army
Series	ATP
Publication date	2014-06-09 (12.1 years ago)
Status	Current
Proponent / OPR	TRADOC
Source of record	Army Publishing Directorate

Official document (Army Publishing Directorate)

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Nearby in the ATP series

ATP 1-06.3 — BANKING OPERATIONS Current
ATP 1-06.4 — INTERNAL CONTROLS Current
ATP 1-19 — ARMY BANDS Current
ATP 2-01 — COLLECTION MANAGEMENT (THIS ITEM IS PUBLISHED W/ BASIC INCL C1) Current
ATP 2-01.3 — INTELLIGENCE PREPARATION OF THE OPERATIONAL ENVIRONMENT (THIS ITEM IS PUBLISHED W/ BASIC INCL C3) 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 ATP 1-20 in an official product.