A ROK Drop favorite, Robert Neff has an article published over in the Korea Times about Ethiopian soldiers that served during the Korean War:
One of the least-known participants in the Korean War was Ethiopia.
The first battalion of Ethiopian soldiers arrived in Busan in May 1951. Known as the Kagnew (“to bring order out of chaos”) Battalion, it was viewed with a degree of skepticism by American officers.
Many felt the Ethiopians should be placed in rear areas instead of the front line, but the Ethiopians insisted on being in the heat of battle with their American counterparts. So they were assigned to the American Seventh Division. (………….)The Ethiopian soldiers soon gained a reputation. The Chinese feared them. The Kagnew Battalion never left a man behind ― wounded or dead ― and none of their soldiers were ever captured by the North Koreans or Chinese. It was like they were ghosts. Perhaps even more alarming were the rumors of cannibalism by the Ethiopians. Of course, these were false, but they only made the Kagnew Battalion even more terrifying to the enemy.
Korea Times
You can read more at the link.