Question: What Soviet political leader held high regard for the author of Mozg Armii, a 3 volume military theory book?

full_context: Document 1: Leon Trotsky: Leon Trotsky ( ;; also transliterated "Lyev", "Trotski", "Trotskij", "Trockij" and "Trotzky". born Lev Davidovich Bronstein; 7 November 1879 – 21 August 1940) was a Marxist revolutionary, theorist, and Soviet politician. Initially supporting the Menshevik Internationalists faction within the Russian Social Democratic Labour Party, he joined the Bolsheviks ("majority") just before the 1917 October Revolution, immediately becoming a leader within the Communist Party. He would go on to become one of the seven members of the first Politburo, founded in 1917 to manage the Bolshevik Revolution. During the early days of the Russian Soviet Federative Socialist Republic (RSFSR) and the Soviet Union, he served first as People's Commissar for Foreign Affairs and later as the founder and commander of the Red Army, with the title of People's Commissar of Military and Naval Affairs. He became a major figure in the Bolshevik victory in the Russian Civil War (1918–1923).
Document 2: Soviet Revolutionary Communists (Bolsheviks): Soviet Revolutionary Communists (Bolsheviks) was an early anti-revisionist movement claimed to be an underground political outfit in the Soviet Union which criticized the leadership of Nikita Khrushchev as revisionist. It upheld the legacy of Joseph Stalin and accused the post-Stalin Soviet leadership of deviating from the socialist path. It represented the line taken by the People's Republic of China and People's Republic of Albania after the Sino-Soviet Split. Little is known about the group.
Document 3: Socialism in One Country: Socialism in One Country (Russian: Социализм в одной стране "Sotsializm v odnoi strane") was a theory put forth by Nikolai Bukharin and implemented by Joseph Stalin in 1924, and finally adopted by the Soviet Union as state policy. The theory held that given the defeat of all the communist revolutions in Europe in 1917–1921 except Russia's, the Soviet Union should begin to strengthen itself internally. That turn toward national communism was a shift from the previously held position by Classical Marxism that socialism must be established globally (world communism). However, the proponents of the theory contend that it does not contradict world revolution or world communism, and only asserts that complete socialism is possible in one country, though communism is not. The theory was in opposition to Leon Trotsky's theory of permanent revolution.
Document 4: Great Purge: The Great Purge or the Great Terror (Russian: Большо́й терро́р ) was a campaign of political repression in the Soviet Union which occurred from 1936 to 1938. It involved a large-scale purge of the Communist Party and government officials, repression of peasants and the Red Army leadership, widespread police surveillance, suspicion of "saboteurs", "counter-revolutionaries", imprisonment, and arbitrary executions. Mobile gas vans were invented to execute people without trial. In Russian historiography, the period of the most intense purge, 1937–1938, is called Yezhovshchina (Russian: Ежовщина ; literally, "Yezhov phenomenon", commonly translated as "times of Yezhov" or "doings of Yezhov"), after Nikolai Yezhov, the head of the Soviet secret police, the NKVD, who was later killed in the purge. It has been estimated that 600,000 people died at the hands of the Soviet government during the Purge.
Document 5: Joseph Stalin: Joseph Vissarionovich Stalin (18 December 1878 – 5 March 1953) was a Georgian-born Soviet revolutionary and political leader. Governing the Soviet Union as its dictator from the mid-1920s until his death in 1953, he served as General Secretary of the Central Committee of the Communist Party of the Soviet Union from 1922 to 1952 and as Premier of the Soviet Union from 1941 to 1953. Ideologically a Marxist and a Leninist, Stalin helped to formalise these ideas as Marxism–Leninism while his own policies became known as Stalinism.
Document 6: Sergey Surovikin: Surovikin served in the Soviet Army from 1987, fighting in the Soviet–Afghan War. He was involved in the August Coup as a battalion commander in the 2nd Guards Tamanskaya Motor Rifle Division. Surovikin was investigated for the deaths of three demonstrators during the coup, but the charges were dropped. After graduating from the Frunze Military Academy, Surovikin commanded a battalion and was chief of staff and commander of a regiment. He graduated from the Military Academy of the General Staff in 2002 and took command of the 34th Motor Rifle Division. From 2004 to 2005 he led the 42nd Guards Motor Rifle Division in Chechnya. Surovikin was chief of staff and then commander of the 20th Guards Army. In 2008, he became head of the Main Operations Directorate of the General Staff. In January 2010, he became chief of staff of the Volga–Urals Military District, which soon became part of the Central Military District. Surovikin led the Ministry of Defense working group in charge of the creation of the Military Police in 2012. He became the chief of staff of the Eastern Military District and was appointed commander of the district in October 2013.
Document 7: History of the Russian Revolution: The History of the Russian Revolution by Leon Trotsky is a 3 volume book on the Russian Revolution of 1917, first published in 1930, translated into English by Max Eastman in 1932. The three parts are: The Overthrow of Tzarism, The Attempted Counter-Revolution and The Triumph of the Soviets.
Document 8: Walter Ulbricht: Walter Ernst Paul Ulbricht (30 June 18931 August 1973) was a German Communist politician. Ulbricht played a leading role in the creation of the Weimar-era Communist Party of Germany (KPD) and later (after spending the years of Nazi rule in exile in France and the Soviet Union) in the early development and establishment of East Germany (the German Democratic Republic). As the First Secretary of the Socialist Unity Party 1950 to 1971, he was the chief decision maker in East Germany. From President Wilhelm Pieck's death in 1960, he was also the East German head of state until his own death in 1973. He followed Stalin's guidelines very closely, and made sure that everyone else in East Germany did so as well. Historian Michael Beschloss says of Ulbricht: "an alumnus of Stalin's wartime Free Germany Committee, the rigid Ulbricht clearly felt that his best path to power was by turning the zone into a highly militarized Soviet client state."
Document 9: Georgy Zhukov: Georgy Konstantinovich Zhukov 1 December 1896 – 18 June 1974), was a Soviet Red Army officer who became Chief of General Staff, Deputy Commander-in-Chief, Minister of Defence and a member of the Politburo. During World War II he participated in multiple battles, ultimately commanding the 1st Belorussian Front in the Battle of Berlin, which resulted in the defeat of Nazi Germany, and the end of the War in Europe
Document 10: Grigori F. Krivosheev: Grigoriy Fedotovich Krivosheyev (Russian: Григорий Федотович Кривошеев , born in 1929) is a Russian military historian and a retired Colonel General of the Russian military. He is mostly known in the West, via an alternative transliteration of his name, Krivosheev, as the editor of a book on Soviet military casualties in the 20th century, which was translated and published in English.
Document 11: Mozg Armii: Mozg Armii (Russian: Мозг армии ), in English The Brain of the Army, is a three-volume military theory book published between 1927 and 1929. It is the most important work of Boris Shaposhnikov, a Soviet military commander then in command of the Moscow military region. "Mozg Armii" gained a wide popularity throughout the Red Army, and Shaposhnikov himself was held in high regard by Joseph Stalin.
Document 12: Military Medical Business: Military Medical Business (Военно Санитарное Дело) was one of the professional medical journals of the Worker's and Peasant's Red Army (RKKA). The journal was published monthly in Moscow. Between 1938-1940, each issue cost 1 ruble and 50 kopecks. A 12-month subscription to the journal for the year 1939 cost 18 rubles. The Moscow publishing house published a total of 33 different professional medical journals for the RKKA in the year 1939. The Leningrad publishing house published five different journals that same year. Four different serials were also published by the Moscow publishing house under the title "Central Medical Abstract Journal". By the end of 1940, the price of a single issue of "Military Medical Business" had increased to 2 rubles. The Moscow publishing house advertised 33 different journals, the Leningrad publishing house advertised 5 journals, and the Kazan publishing house advertised 1 journal for the year 1941. A 12-month subscription to "Military Medical Business" cost 30 rubles in 1941. The Moscow publishing house also advertised four serials under the title "Central Medical Abstract Journal" for the year 1941.
Document 13: Political repression in the Soviet Union: Throughout the history of the Soviet Union tens of millions of people became victims of political repression, which was an instrument of the state since the October Revolution. Culminating during the Stalin era, it still existed during the "Khrushchev Thaw", followed by increased persecution of Soviet dissidents during the Brezhnev stagnation, and didn't cease to exist during Mikhail Gorbachev's perestroika. Its heritage still influences the life of modern Russia and other former Soviet states.
Document 14: Brain-Washing (book): Brain-Washing: A Synthesis of the Russian Textbook on Psychopolitics, sometimes referred to as The Brainwashing Manual, is a book published by the Church of Scientology in 1955. It purports to be a condensation of the work of Lavrentiy Beria, the Soviet secret police chief. The book states Kenneth Goff as author. Its true authorship is not clear, the three common hypotheses being: Scientology founder L Ron Hubbard, Kenneth Goff (alias Oliver Kenneth Goff), or both L Ron Hubbard and Kenneth Goff based on an acquired US agency report. The third hypothesis is questionable as there is not proof that the two men ever knew each other. Claims that L Ron Hubbard was the author are also dubious as the only source of this claim is his estranged son, L Ron Hubbard Jr., who made it his life work trying to intentionally discredit his father in every possible way, and in addition to withdrawing all his accusations before his death, has been discredited in courts of law.
Document 15: Stalinist repressions in Mongolia: The Stalinist repressions in Mongolia (Mongolian: Их Хэлмэгдүүлэлт , Ikh Khelmegdüülelt, ""Great Repression"") refers to a period of heightened political violence and persecution in the Mongolian People's Republic between 1937 and 1939. The repressions were part of the Stalinist purges (also known as the Great Purge) unfolding across the Soviet Union around the same period. Soviet NKVD advisors, under the nominal direction of Mongolia's "de facto" leader Khorloogiin Choibalsan, persecuted individuals and organizations perceived as threats to the Mongolian revolution and the growing Soviet influence in the country. As in the Soviet Union, methods of repression included show trials, torture, and imprisonment in remote forced labor camps. Estimates differ, but anywhere between 20,000 to 35,000 "enemies of the revolution" were executed, a figure representing three to five percent of Mongolia's total population at the time. Victims included those suspected of espousing lamaism, pan-Mongolist nationalism, and pro-Japanese sentiment with the Buddhist clergy, aristocrats, intelligentsia, political dissidents, and ethnic Buryats and Kazakhs suffering the greatest losses.
ground_truth: Joseph Stalin