A lesser - known but very interesting book is 'Stalingrad' by Antony Beevor. This book focuses on the Battle of Stalingrad, one of the most crucial battles in WW2. It details the military strategies of both the German and Soviet forces, the mistakes made, and how the battle ultimately turned the tide of the war on the Eastern Front.
You might also like 'Goodbye, Darkness: A Memoir of the Pacific War' by William Manchester. It offers insights into the military strategies used in the Pacific theater. Manchester, as a veteran himself, was able to provide a personal perspective on the battles, the decision - making processes, and the challenges faced by the soldiers.
For military strategy, 'The Rise and Fall of the Third Reich' by William L. Shirer is a good choice. It not only delves into Hitler's regime but also analyzes the military strategies of the German military during the war. It provides a comprehensive view of how the war was planned and executed on the German side.