I can strongly recommend this title; while it does contain some blood, it's nothing particularly major, realistic, gory, etc. Battles are viewed from high above, it's as if directing things from an airplane.
Graphically speaking... Perhaps a little bit dated, seeing as the year of my review is 2010, but nonetheless, this game is a classic.
I also enjoy the historical value of it, having not only played the campaigns with figures as Attila the Hun and Joan of Arc, but I've also read other peoples experiences of how they became interested in history after playing this.
It's relatively easy to pick up, but can take a while to master. I really enjoy the whole strategy aspect as well, thinking things through in order to reach the next level.