The Diamond Eye

 Another great historical novel from Kate Quinn featuring a strong female protagonist. Here is the summary and review from Publishers Weekly:

"Quinn ... draws on a historical female sharpshooter from WWII in her exciting latest. In 1937, Mila Pavlichenko studies history at Kiev University and raises her five-year-old son, Slavka. She's estranged from her husband, Alexei, a surgeon whom she met when she was 15. When the Germans invade Russia, Mila, who's already trained at a marksmanship school, enlists in the army, is assigned sniper duty, and earns the nickname "Lady Death" for her high number of kills. In battle, Mila is steadfast about completing her missions with her partner, Kostia, and also finds time to write letters to Slavka. In 1942, Soviet leaders send Mila with a delegation to Washington, D.C., to meet with President Roosevelt in a bid to seek American support... Mila unexpectedly develops a friendship with Eleanor Roosevelt, but faces a threat from a misogynistic male marksman who sends her threatening notes. Quinn humanizes Mila by showing how she and Kostia use humor--along with a healthy amount of vodka--to cope with their risk-taking, and she convinces with her description of Eleanor's political savvy and influence on the president. Historical fiction fans will be riveted. " 

Library Journal also praises with these additional observations: "There's so much packed into this book, from subtle, complex characters who grow and change throughout to lessons about this the real history behind the book. The relationships build an emotionally engaging foundation as tension builds on battlefields and danger tracks Mila in Washington. Quinn (The Rose Code) specializes in centering strong women; each of her books exceeds expectations set by the previous title." Booklist calls the book "thrilling" and concludes, "Recommend it to... all lovers of smart historical fiction....[Quinn's] inspiration for the hero of this powerful WWII tale, a librarian-turned-military-sniper, will appeal to an even greater audience."