Army Techniques Publication ATP 3-21.9 Stryker Infantry Rifle Platoon and Squad June 2025

This United States Army manual, Army Techniques Publication ATP 3-21.9 Stryker Infantry Rifle Platoon and Squad June 2025, provides doctrine for the Stryker Infantry rifle platoon and squad of the Stryker brigade combat team Infantry rifle company against a peer threat. This publication describes relationships, organizational roles and functions, capabilities and limitations, and responsibilities within the Infantry rifle platoon and squad. Techniques, non-prescriptive ways, or methods used to perform missions, functions, or tasks (see CJCSM 5120.01C), are discussed in this publication and are intended to be used as a guide. This publication supersedes the techniques and employment principles of the Stryker Infantry rifle platoon and squad in ATP 3-21.8.

The principal audience for ATP 3-21.9 is the commanders, staff, officers, noncommissioned officers, and Soldiers within the Stryker Infantry battalion. The audience includes the United States Army Training and Doctrine Command institutions and components. This publication serves as an authoritative reference for personnel developing doctrine, materiel and force structure, institutional and unit training, and standard operating procedures for the Infantry rifle platoon and squad.