Amgalant One: The Old Ideal is about the historical mongol conqueror Genghis Khan. It's written only a couple of generations after he died.
At first it started a little slower than I expected, but once the main story got started I just couldn't put it down. This is only the 1st part of a triology so I look forward to reading the next two. I've already got Amgalant Two: Tribal Brawls.
The author has a great imagination and the characters of this trilogy will leave you looking forward to the next book. Having such memorable characters is essential to any trilogy or storyline.