The writing is vivid and the illustrations are fantastic. This is National Geographic at its best, with full-color reproductions of period paintings and photographs of modern reenactors, plus simple and easy-to-understand maps.
The narrative is shamelessly pro-American. The story reads like a 1950s-era retelling of the Revolution, in which all the British are venal and all the Americans are heroic underdogs (except, of course, for Benedict Arnold). Thompson glosses over a lot of detail in his description of events. Nevertheless, this is a good book for kids about age 10 or so; it has all the major events, with sidebars about the larger context, including the industrial revolution and the design of uniforms, and short biographies of some key individuals.
Not a book for serious historians, but a lot of fun to read.