We sit down with Liza Mundy, author of Code Girls: The Untold Story of the American Women Code Breakers of World War II . The book outlines recently declassified documents that revealed the role more than 10,000 young American female code-breakers played in World War II. Their efforts gave U.S. commanders the intelligence they needed to foil Japanese and German attacks, thereby saving countless American lives. Liza Mundy is a staff writer at the Washington Post and author of Michelle: A Biography and Everything Conceivable.