“I suggest you read “Born in Blood””
You are correct, that is an excellent book!
His 2nd book about the Crusades is also interesting, but a bit buried in detail.
Here is another source of Crusade history that I thought was good:
Memoirs of Extraordinary Popular Delusions and the Madness of Crowds by Mackay http://www.gutenberg.org/ebooks/24518
“The Crusades” portion of the book is here:
http://www.gutenberg.org/files/24518/24518-h/dvii.html#crusades