Soviet Union was introduced later in 1935, it became the highest rank in the Red Army, extending an already complex rank system. However, when personal General ranks were introduced in 1940, the updated rank system did not feature a Brigadier-grade rank, mirroring a situation in the Russian Imperial Russian army where the Brigadier rank ceased to exist in the early 19th century. Most of the officers holding the kombrig rank were demoted to Colonels, and only a few were promoted to major general. Another peculiarity of this new system was the absence of a full General rank, which until the 19th century was called General-en-Chef in the Russian Imperial army, and then was renamed General of the Infantry, Cavalry and Artillery. Curiously, the initial draft of the new rank system submitted by People's Commissar of Defence Marshal Voroshilov was more in line with Russian military tradition. In a memorandum submitted on 17 March 1940 to the Politburo and Sovnarkom, Voroshilov made the following proposal: However, in the final document, the two komandarm ranks were replaced with Colonel General and General of the Army, with the rank of Marshal of the Soviet Union on top of them. In the end, the number of General-grade ranks did not reduce at all even with the abolition of the Brigadier-grade kombrig rank, contrary to the initial proposal by Voroshilov. After the introduction of this new system, most existing kombrigs were ranked as colonel, although some were ranked as general; existing komdivs were mostly ranked as major general, komcors and Army Commanders 2nd rank was mostly ranked Lieutenant General, and Army Commanders 1st rank were ranked as Colonel General or General of the Army (a notable exception is Georgy Zhukov who was promoted to General of the Army directly from komcor rank). Later in 1943, the ranks of Marshal and Chief Marshal of a service branch were introduced in aviation, artillery, communications troops, and armored troops; both equivalent to General of the Army. The final personal rank structure (for the Army and the Air Force) was thus as follows: Colonel – Brigade or Division level Major General – Corps, Division, or (rarely) Brigade level Lieutenant General – Corps or Army level Colonel-General – Army or Front level General of the Army – Army or Front level Marshal or Chief Marshal – service branch, Army level Marshal of the Soviet Union – Front or Supreme Command