Readable Japanese History Book


Thousand Master
After watching Musashi, and finding a copy of the 'Book of 5 Rings' wondered if anyone could recomend a book on Japanese History written in a readable style.
I was facianted by the comparisons in Musashi between Japanese, Chinese and Western medievil armies and chivary and how they affected the culture and would like to do some more reading on it.
Depends on your definition of "readable" and how terribly accurate you want the facts to be, but you could do worse than starting with George Sansom's "A History of Japan" books.