Two were graphic novels, Rex Mundi: Book Three: The Lost Kings and Rex Mundi: Book Four: Crown and Sword, both of which I enjoyed very much. I'm on the lookout for the last two book of the saga to finish off, and I'll probably have them in hand and read by the end of the month.
I also read an ebook, Osprey Men-at-Arms #204: Wellington's Specialist Troops, which details primarily the uniforms of the Royal Artillery, Engineers and Medical Corps in the Napoleonic era. Eh.