The history classes you took in school undoubtedly covered at least some portion of World War II. It is unlikely that your history textbooks included information about the incredibly important work that women were doing. The full title of this book is The Girls of Atomic City: The Untold Story of The Women Who Helped Win World War II. It was written by Denise Kiernan.
Obviously, this book is non-fiction. It includes a narrative that was based on the interviews that Denise Kiernan did with several women who worked in Oak Ridge, Tennessee – a town that officially did not exist – at the Clinton Engineer Works – which also did not officially exist. Secrecy was vitally important because those who were hired were actually working on the atomic bomb. None of them knew this was what they were doing until after the bomb had been dropped.