I recommend a book called "Global Digging Party" to you. This book describes various historical truths and treasures on the battlefield of World War II. Digging parties constantly take risks on various battlefields in pursuit of these truths. However, it also contains an introduction to various war backgrounds and historical events. I believe it can satisfy your needs for a comprehensive understanding of the history of the European battlefield in World War II. I hope you like this fairy's recommendation. Muah ~π