Muster of the East-mark

In time of war, the Rohirrim east of the River Entwash would be assembled as the Muster of the East-mark, normally under the command of one of Rohan's Marshals of the Mark. At the time of the War of the Ring, this commander was Éomer, who held the title of Third Marshal, and administered the East-mark from the town of Aldburg. As matters in that war developed, Éomer's role became more important, and his command of the Muster of the East-mark was passed on to Elfhelm. After the War of the Ring, by Éomer's command, Elfhelm was given the new title of Marshal of the East-mark and retained his command of its muster.