I was very impressed with this book. It has a lot of great rules that can be used for a variety of Battletech games. I was really impressed by the chapters on force creation, chaos campaign and narrative campaigns. The sample ACS units and teams will be a great help for anyone playing ISW. The only dissapoint I had with this book is that the Clans didn't really seem to get much attention. I really wish the Clans had sample ACS units along with other information, but unfortunately they seemed overlooked in much of the book. It is still a really good book though, and I hope to find a lot of use for it.