In 99 AG, ostrich horses were a common sight in the military of the Earth Kingdom, as they were used by a group of Earth Kingdom soldiers during their attempt to escort Iroh to Ba Sing Se following his capture by Gow and his men. They were also present in large numbers at General Fong's fortress, and the Royal Earthbender Guards stationed at the Earth Kingdom Royal Palace employed these animals as cavalry mounts as well. Additionally, shortly after the end of the Hundred Year War, General How and several guards rode the creatures during the Earth Kingdom military's march to Yu Dao.