American infantrymen march in column along a tree-lined French road during World War I. Wearing broad-brimmed campaign hats and full marching packs, these soldiers of the American Expeditionary Forces are likely moving between billets, training grounds, or forward positions somewhere in France, circa 1917-1918. The flags visible partway down the column mark a headquarters or color detachment. Photographs like this one capture the everyday reality of the AEF's presence in Europe -- the long, dusty marches that filled the days between the battles that defined America's entry into the Great War. Project: 218365