Starred Review. “So much new information is packed into this story that becomes the best kind of history lesson. . . In 1917, Marie in Cincinnati, Grace in New York City, and Valerie in Los Angeles are all young women working a switchboard at their local telephone company. When the U.S. Army Signal Corps sends out a call for experienced operators fluent in French, they were among the few able to pass rigorous enlistment examinations. Once deployed, the women found themselves widely dispersed and facing unique challenges, but always connected. Chiaverini makes it easy to identify with and care about these women who come from three regions of the United States and have differing familial and cultural backgrounds but share the motivation of patriotism for multiple countries.”