On a frigid afternoon in February 2003, Deanna Germain, a nurse practitioner and new grandmother living in Blaine, Minnesota, received the registered letter she had hoped would never arrive. In six days she was to report for active duty as war loomed in Iraq. The purpose of mobilization: "For Enduring Freedom." With startling detail, Lt. Col. Germain offers a clear-eyed account of life as a nursing supervisor behind the fortified gates of Abu Ghraib...