https://en.wikipedia.org/wiki/Theban_Legion
According to Eucherius of Lyon, c. 443–450, the Legion was the garrison of the city of Thebes in Egypt. The Legion were quartered in the East until the emperor Maximian ordered them to march to Gaul, to assist him against the rebels of Burgundy.The Theban Legion was commanded in its march by Saint Maurice (Mauritius), Candidus, Innocent, and Exuperius, all of whom are …