In accordance with ATP 3-21.10 the composition and training of the Infantry rifle company’s three Infantry rifle platoons uniquely enable it to conduct missions against conventional and unconventional enemy forces in all types of terrain and climate conditions. The three rifle platoons are the dominant movement and maneuver element within the company and provides its primary combat power. Each rifle platoon consists of three rifle squads and a weapons squad.
The rifle squad consists of the squad leader and two fire teams. Each fire team has a fire team leader armed with an M4 carbine, a grenadier armed with the M320, 40-millimeter (mm) grenade launcher, an automatic rifleman armed with an M249 squad automatic weapon, and a rifleman armed with an M4 carbine. A member of the squad, usually one of the riflemen, is the squad designated marksman.
The weapons squad consists of the squad leader; two machine gun teams and two anti-armor teams. Each machinegun team has a M240 machine gunner and assistant gunner. Each anti-armor team has an anti-armor team specialist and ammunition handler equipped with the Javelin medium close combat missile system.