United States Marine Corps Infantry MOS 0311 Grunt T-Shirt. Digitally Printed on soft superior 100% ring-spun Cotton, Triblend, 50/50 premium Soft Style Quality T-shirts. Not Slim Fit Size XXL is Heavy Cotton. A fireteam is a small military sub-subunit of infantry designed to optimise " bounding overwatch " and " fire and movement " tactical doctrine in combat. Depending on mission requirements, a typical fireteam consists of four or fewer members: an automatic rifleman, a grenadier, a rifleman, and a designated team leader. The design consist of a Devils Skull impaled with a KA-BAR, Marine Crossed Rifles, Infantry 0311 with the words "Never Die, We Just, Go To Hell, To Regroup".