A Legion Centurion is typically in command of the Palace Guard of the White Gold Tower. Those who protect the Emperor and the Imperial Province are sometimes called the Imperial Guard and the Imperial Watch. The primary mission of the Imperial Legion is to preserve the peace and rule of law in the Empire. With its vast numbers, quality training, and rigid discipline, the Legion is considered one of the best armies ever assembled in history. It operates under the auspices and authority of the Emperor himself. It is often pluralized as the Imperial Legions. The Imperial Legion, also known as the Imperial Army and the Ruby Ranks, is the main fighting force of the Empire of Tamriel.