This thesis addresses the unique composition of the 6th U.S. Marine Regiment and the role they played in the battle of Belleau Wood. It analyzes composition of the 6th Marine Regiment: 60 percent were college men, many of whom were college athletes. With the exception of the Battalion's senior officers and a handful of senior non-commissioned officers, the Regiment was composed of volunteers. Although they were put through rigorous training, these young Marines were not fully prepared for the war that they would face. These young men overcame shortfalls, and became leaders who motivated others to follow. The argument is that these men were able to use their educational and athletic backgrounds to overcome adverse training and combat conditions and proceeded to shape both the outcome of the First World War as well as the Marine Corps for the remainder of the 20th Century.