Robert Dalessandro, Executive Director of the U.S. Army Center of Military History, visited the Memorial in October 2012 and lectured on the topic of the organization and insignia of the American Expeditionary Force (AEF). World War I marked a watershed moment in the organization of the United States military. The incredible scale of the war, as well as the changing nature of warfare made many of these changes necessary. From the size of an army to the composition of smaller units like platoons and companies, the American military underwent a reorganization on many levels. In addition to these changes, Dalessandro also traces the development of the insignia of the AEF and discusses a few of the stories behind the adoption of certain insignia by different AEF divisions.

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