An American soldier of the First World War pauses on a rustic log footbridge built by military engineers in a forested combat zone. His campaign hat, wool tunic, and wrapped puttees mark him as a member of the American Expeditionary Forces that deployed to Europe in 1917-1918. Rough-hewn timber bridges like this one were a common improvised solution for moving troops and supplies across difficult terrain near the front, often built rapidly by engineer or pioneer battalions using local timber. Project: 218654