The Golden Doves by Martha Hall Kelly

In 1952, Josie Anderson works in intelligence at the U.S. Army base in Fort Bliss, Texas, separating the Germans that the U.S. has accepted into the country for its defense program into two groups: committed Nazis or minor players. When the opportunity arises to apprehend a doctor from the Ravensbruck concentration camp, Josie immediately takes on the assignment. During the war, she and her best friend, Arlette LaRue, spent time in the camp along with Josie's mother, and saw firsthand all the horrible things that happened there. Josie and Arlette met when they were put together in Paris to work for the resistance transcribing radio transmissions for the Allies. They became fast friends and lived with Arlette's young son, Willie, until they were captured and sent to the camp. While at Ravensbruck, Arlette was separated from Willie and has lived out the years since the war in Paris and dreaming of the day when she is reunited with her son. When a man named Luc Minau tells Arlette that he believes he might have found Willie, Arlette jumps at the chance to go to French Guiana where Luc's family has an orphanage. The Golden Doves charts Josie's and Arlette's journeys during the war and now as they try to put their lives back together and avenge the wrongs that happened to them.