What was the name of the U.S. troops who served in World War I, including draftees and volunteers?

The correct answer is the American Expeditionary Force (AEF). This term specifically refers to the U.S. troops, both draftees and volunteers, who were deployed to Europe during World War I. Led by General John J. Pershing, the AEF played a crucial role in major battles such as the Second Battle of the Marne and the Meuse-Argonne Offensive.

The other choices do not accurately reflect the name used for U.S. forces in World War I. The American Military Forces is a vague term that does not specifically identify the troops in that conflict. The Army of the United States refers to the entire military organization but was not the designated name for the troops in World War I. The Continental Army was the name of the revolutionary forces during the American Revolution, not World War I.