I am looking for a fantasy book from the '80s or '90s, set in medieval times, with very graphic battle scenes which include one of the main characters wielding a double-sided battleaxe that cuts an enemy in half at the top of a castle wall.
The scene that I most remember, about the enemy being cut in half, continues to describe how the top half falls but the bottom half stays, and they are still connected by the intestines, causing the top half to bounce up and down like a bungee cord.
I believe the author of the book was David Eddings.