The 311th Infantry Regiment, part of the 78th "Lightning" Division (AEF), fought in the major WW1 campaigns including the St. Mihiel Offensive and the Meuse-Argonne Offensive, notably participating in heavy combat in the Bois de Bourgogne and near Grandpré. They also held defensive sectors in Lorraine and Champagne.
The 78th Division of the United States Army was activated on 23 August 1917, over 4 months after the American entry into World War I, at Camp Dix, New Jersey. The division was originally allocated to New York and northern Pennsylvania in the National Army plan.
Whilst the HQ of the 78th Division was activated in August, with the first draftees arriving in September 1917, it was not fully active until early 1918. After several more months of training, the 78th was transported to France in May and June 1918. In France, during the summer and fall of 1918, it was the "point of the wedge" of the final offensive which knocked out Germany. The 78th was in three major campaigns during World War I -- Meuse-Argonne, St.
Army helmets featuring split rivet swivel bails for the chinstrap, were British-made Mk I helmets used by American troops, rather than a US-manufactured M1917 helmets. THIS IS NOT A REPRODUCTION OR A COPY.