Axes are very common among the Nohrian cavalry, along with spears. However, the airborne divisions of Wyvern Riders and Malig Knights favor axes simply because of our mounts. Swooping down on enemy lines makes an axe far more practical than a lance or sword.

That is one thing I do miss... my Wyvern was so adorable... and flying with her was one of the few luxuries I was truly allowed...