I quite enjoy reading about the Crusades and that period in time. If that interests you, there's a cracking trilogy about the Knight Templar's written by Robyn Young. Her books are called Brethren, Crusade and Requiem. Excellent books!
It's a cracking number for anybody who has a young family. Gets a bit repetitive, however, the 4 days on 4 days off shifts are great - I see loads of my wife and kids when did you serve with that mob then?