Casualties
The AEF sustained about 320,000 casualties; 53,402 battle deaths, 63,114 non combat deaths and 204,000 wounded. This high AEF casualty count was sustained at a time when French casualties for 1918 are listed as 330,000, but with a much longer front line to hold.
The influenza pandemic during the fall of 1918 took the lives of more than 25,000 men from the AEF while another 360,000 became gravely ill. Other diseases were relatively well controlled through compulsory vaccination. Typhoid fever was also practically eliminated. Relatively few men suffered actual injury from poison gas, although much larger numbers thought (falsely) that they had been exposed.
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