List of numbered documents of the United States Department of War

From 1896 to 1929, the United States Department of War gave their publications a successive number, like other departments including the Department of Agriculture and Department of the Treasury. They were mostly (drill) regulations and other field manuals (as they were later called, when the War Department adopted the FM Field Manual numbering), but also collections of military laws or descriptions of countries of military interest and campaigns or battles.

Source: Wikipedia — List of numbered documents of the United States Department of War (CC BY-SA 4.0)