Ranks "Lieutenant Colonel" and "Senior Battalion Commissar" were introduced in 1937. Leon Trotsky served as their first commissar for war. It demanded that any Soviet political commissar identified among captured troops be shot immediately. He had spent the entire war as a political commissar rather than a military commander. Tukhachevsky reached the position of 1st deputy commissar for defence to commissar for defence Voroshilov. Anatoly Lunacharsky became the first People's Commissar for Education of Soviet Russia. Stalin issued the order in his capacity as People's Commissar of Defence. He was demoted in rank two levels down to a corps commissar. The battery commander was Arthur Timpson, with Jack Waters as Commissar. Ciaphas Cain is a "Commissar," a political officer of the Imperium of Man's troops. Nikolai Podvoisky became the commissar for war, Pavel Dybenko, commissar for the fleet. The Political Commissar is Liu Lei. Yagoda was demoted to the post of People's Commissar for Post and Telegraph. A major was graded as a commissar, not an officer. Lunacharsky agreed and named him Commissar Curator of Pavlovsk.