"Prodigiously researched and engrossing" (New York Times), Code Girls is Liza Mundy's award-winning account of the American women who secretly served as US Army and Navy codebreakers during World War Two—a book that "shines a light on a hidden chapter of American history" and a "story of courage and determination that makes you want to work harder and be better" (Denver Post). Recruited by the U.S. Army and Navy from small towns and elite colleges, more than ten thousand women served as codebreakers during World War II. While their brothers and boyfriends took up arms, these women moved to Washington and learned the meticulous work of code-breaking. Their efforts shortened the war, saved countless lives, and gave them access to careers previously denied to them. A strict vow of secrecy nearly erased their efforts from history; now, through dazzling research and interviews with surviving code girls, bestselling author Liza Mundy brings to life this riveting and vital story of American courage, service, and scientific accomplishment.