I published so many articles in History of Dentistry Journals and Scientific ones all around the world. It was the time for me, I think, to collect those articles and to publish a book written in English. My first one. I already published 37 books in French. I worked on so many historical topics. It seems normal to me to publish a book on World War II. I wrote two thesis on that topic, five or six books, maybe more, and so many articles, as I already said. I'm ready now. I hope you will enjoy reading this book. It was a real pleasure to write it.