Pratt describes sixteen battles, writing with a thrilling style. He explains clearly why he has chosen these battles, and how they actually did 'change history', his thesis is that the underdog can win, changing the lives of the people for good. The gripping accounts range from Alexander the Great's overthrow of the Persian empire in the 4th century BC to World War II's Battle of Midway. Pratt gives the background information leading up to the battles, the people involved and the important aftermath. The style is such that it will hold the attention of children, as well as adults. The book comes complete with twenty-seven maps.