The author, Steven Zaloga, is an expert on the M4 and knows a lot about German armor. He lays out a very unbiased comparison of two of the most heavily used tanks in Northern France. The artwork is very detailed. The development history is very informative. I like the chapters on Operation Cobra, the breakout from the hedgerow country. There was some really hard tank fighting in the opening days. This book is about 100 pages long, have some detailed battle maps and loads of detailed information.