Marine Corps Reference Publication (MCRP) 3-10A.4, Marine Rifle Squad, contains tactics, techniques, and procedures for rifle squad employment and captures lessons learned from recent decades of conflict. It covers a range of missions that Marine rifle squads deal with today or may deal with tomorrow. Despite this extended coverage, MCRP 3-10A.4 is not intended to be all-encompassing. There are many aspects of rifle squad operations that are not detailed herein because a specific publication already exists for that purpose and covering it would be redundant. It also does not address force structure and weapon system changes anticipated over the next several years unless sufficient experimentation and testing have already been conducted to generate best practices that are ready to be codified here. This publication does serve, however, as the basic warfighting squad publication and is to be used in conjunction with the appropriate infantry platoon, company, and battalion publications, as well as other publications that relate to the conduct of ground operations.

This publication is intended for Marine Corps infantry company and below leadership, including units serving as provisional infantry. It is a foundational document that assists in the preparation and execution of squad-level operations in the current operational environment in order to accomplish their assigned missions.

This publication cancels MCIP 3-10A.4i, Marine Rifle Squad, dated 10 June 2019 with change 1 dated 15 May 2020.