The 2nd Infantry Division was first formed in September 1917 during World War One. It was unique in that it comprised of both Army and Marine regiments. During the war, it had two Marine commanders, the only time in American military history that a Marine commanded an Army division. They fought bravely at the battles of Belleau Wood and Château-Thierry, helping to break the four-year-long stalemate. They went on to participate in the Meuse-Argonne Offensive, which helped bring the war to an end in late 1918…
