This book was a good book and it gave you a lot of information about all of the weapons and transportation vehicles that were used in all of the wars. This book talked about the specific little things that make the guns more accurate in the battle. Many of the first guns were very heavy including the first muskets. They then figured out how to put a twist on the bullet letting in fly through the air faster and more efficiently. When the were stopped at a stand point they figured out on how dig trenches for warfare which allowed them to duck and got into cover. In this book they also talk about the two bombs that were dropped on Hiroshima and Nagasaki in August 1945. They killed more than 120,000 people. This was one of the great books of information that I have read.