Has anyone read Medieval Mercenaries by William Urban? I just picked up a copy this weekend and I'm only 1/3 through the book but, thus far, very happy with my purchase. The activities of free mercenary companies, especially during the Hundred Year War, are laid out in quite some detail. These were not a bunch of Boy Scouts, especially when they lacked employment and laid waste to the countryside.
I'll provide a proper review once I've read the book and digested the material.