The Auxilia Palatina were part of the elite units of the Empire, the Palatini (see my second post related to the Late Roman Army). They were of a higher rank than the Comitatenses who were more ordinary soldiers.
The Victores Iuniores
The Victores Iuniores were an Auxilia Palatina unit. According to the Notitia Dignitatum, they were under the command of the count of Spain, or Comes Hispenias.
Their shield patterns showed a winged Victory, which evocates the name of the unit, Victores.
And here are my interpretation of the soldiers, and of the shield - it was a challenge proposed by Chariobaude in a topic at Benno's Figures Forum.