On August 13, 1918, Opha May Johnson became the first woman to enlist in the United States Marine Corps. Her enlistment opened the door for other women to serve in clerical and support roles during World War I. This step reflected the growing need for personnel as the country mobilized for war. Women in these roles freed more men for combat duties. The experience paved the way for expanded participation of women in the armed forces in later conflicts. Johnson’s enlistment is commemorated as a milestone in military and women’s history.
