This presentation presents the role and achievements of women working in American cryptology during WWII. Breaking enemy secrets required the skills of gifted men and women in mathematics and language. With men being sent overseas, women were needed to fill the void and thousands joined the cryptologic field as civilians and women in the military. Some helped by doing the day-to-day tasks required for breaking the Germans' Enigma encrypted messages, while others were key players in solving the Japanese fleet code. These are their stories.