Ûsrievar

The Ûsrievrim are an Easterling confederacy of the early fourth age that becomes main rival of the expanding Reunited Kingdom along it´s eastern borders.

Speculations
The Ûsrievrim are probably descendants or identical with the tribal coalition formed by Vacros shortly after the war of the ring under the secret influence of Alatar.They may be to the largest part remnants of Sauron´s great eastern Army and the Order of Dragon-Knights.Later leaders of these Ûsrievrim could be Khoragan and Brudhan and other characters who appear in the A new shadow and return of the shadow MODs of Middle-Earth -Total War.