Panzer IV vs Sherman France 1944

I was really excited to read this book by Steven Zaloga. He is one of the few authors who have greatly researched the M4 tank for his very good books Armored Thunderbolts: The US Army Sherman in World War II and Armored Victory 1945. When I saw that he wrote this book, I knew it would not be full of myths about the M4. Mr. Zaloga is also a very good modeler. I have his Modeling US Armor of World War 2 and refer back to it often since I am building Dragons M4 Direct Vision #6579 currently. This book will come in handy with the great color artwork of the M4 in it. I have never read an Osprey Duel series and I truly enjoyed this book. I will be getting more of these in the future. I like how this book started off with a Chronology of each tank and explains how they were developed over many years and many variants. Then it moves on to how these two tanks were used in combat units before Operation cobra in July 1944. The book centers on the M4 and M4A1 that the US Army used during the D-Day operations. They are basically the same tank, but the M4 has a welded hull and the M4A1 is cast, 90-95% of their parts are the same. On the German side is the Panzer IV, Ausf H, what was the main variant used by the three German armor divisions facing the Americans during Operation Cobra.