- TC 3-21.5Publication
Drill and Ceremonies
TC 3-21.5 is the Army's drill and ceremonies manual: individual and unit drill, the manual of arms, and the sequence for formations, reviews, and ceremonies. It is the single most quoted publication at promotion boards after the leadership doctrine. The May 2021 edition supersedes the January 2012 version.
- ATP 3-21.8Publication
Infantry Rifle Platoon and Squad
ATP 3-21.8 is the techniques manual for the Infantry rifle platoon and squad across Infantry, Stryker, and armored brigade combat teams. It carries battle drills, movement formations, and the offensive and defensive tasks small units actually execute. The posted file is the January 2024 edition incorporating change 1, dated June 2025.