"Why Normandy Was Won: Operation Bagration and the War in the East 1941-1945" by Ken Weiler is a historical book published by Ostfront Publications, LLC in 2010. The book delves into the reasons behind the success of the Allies at Normandy, exploring how Stalin and the Red Army's actions in the East contributed to the victory. The book-length work, presented in a trade paperback format, features illustrations and spans 457 pages, making it a detailed and informative read for history enthusiasts interested in the European theater of World War II.