March is Women's History Month Here's a photo of the museum's Women in American Cryptology exhibit. The exhibit highlights contributions of 25 women who have helped create cryptologic history. The display begins with a member of the Culper Spy Ring during the American Revolution who used her laundry as a secret code. Women spies from the Civil War also used codes and ciphers to aid those fighting for the causes they believed in. But it wasn't until the 20th century that women began to work full-time in cryptology. During WWI, several women considered as cryptologic pioneers began their careers, as did some women few people today would know. During WWII, thousands of women joined the military or worked as civilians for the military as cryptanalysts, intercept operators, technicians, machinists, and every other position available in cryptology. They served as WAVES (Women Accepted for Volunteer Emergency Service) in the Navy's cryptologic organization OP-20-G in Washington, D.C., the National Cash Register Company in Dayton, Ohio, and the U.S. west coast. Many also served in the Women's Army Corps where they worked in the Signal Corps in places like Arlington Hall Station, Two Rocks Ranch, California, and other places around the world. Many of these women chose to stay in the field after the war providing breakthroughs and contributions throughout the Cold War. Eventually, women rose to the highest ranks of management and today continue to support, develop, and build the cryptologic legacy of tomorrow.