Imperial Knight ended in 1806.
The ten achievable ranks for a member of the Imperial Legion in The Elder Scrolls III: Morrowind are as follows: # Recruit # Spearman # Trooper # Agent # Champion # Knight Errant # Knight Batchelor # Knight Protector # Knight of the Garland # Knight of the Imperial Dragon The Legions favourite attributes are: Athletics, Spear, Longblade, Blunt Weapon, Heavy Armour, Block. To join the Imperial Legion, talk to Darius in Gnisis. He can be found downstairs in the Madach Tradehouse. He can give you missions and advancement, as can the Legion Champions at the other forts. To advance to Knight of the Imperial Dragon it is necessary to defeat Varus Vatinius, the current holder of the title in a duel in the Arena. He can be found in the Grand Council Chambers in Ebonheart. Previous answer has been moved to the discussion page.
Imperial Airways ended in 1939.
Imperial Yeomanry ended in 1908.
Imperial Records ended in 1970.
Imperial Schrade ended in 2004.
Knight Marischal ended in 1863.
Knight Ridder ended in 2006.
Imperial Mexican Railway ended in 1867.
Imperial German Navy ended in 1919.
Keijō Imperial University ended in 1946.
Imperial Japanese Navy ended in 1947.
Imperial Japanese Army ended in 1945.