After Lenin's death, people wrote articles to commemorate Lenin's great achievements. However, Trotsky's several consecutive articles not only did not commemorate the deceased great men, but instead magnified their achievements infinitely and pushed themselves to hell. In September 1924, Trotsky compiled a book titled lessons from October.

In this book, Trotsky's description is that on October 16, after he rejected Kerensky's order to transfer most of the garrison troops to the front line and established the Revolutionary Military Commission headed by him, the armed uprising of the October Revolution actually began. By October 25, when Lenin rushed back to Petrograd, in fact, the Russian armed uprising had completed more than three-quarters of the process. In other words, the uprising carried out on October 25 led by Lenin only had a supplementary and auxiliary nature. To put it bluntly, Trotsky meant that most of the achievements of the October Revolution were achieved under the leadership of Trotsky, and Lenin's achievements were not as great as Trotsky. The most tragic thing is that in the book compiled by Trotsky, Trotsky once again retells in detail the current political enemies, Zinoviev and Kamenev, who opposed the entire process of the armed uprising of the October Revolution. You should know that after Lenin's death, the Soviet political arena was divided into a majority led by Stalin, Zinoviev and Kamenev, and a minority led by Trotsky.

First of all, what Trotsky said in the article that the mistakes made by Zinoviev and Kamenev did not wrongly accuse them, but when the old things were mentioned again at the handover of rights, people generally believed that Trotsky had ulterior motives and his motives were impure. In addition, Trotsky's articles were inappropriately raised and exaggerated, and his own status and role in the October Revolution, and even portrayed himself as a person who was more skilled than the great mentor Lenin, which was unacceptable to almost all the Soviets. After that, in the eyes of the majority led by Stalin, Zinoviev and Kamenev, Trotsky became a political enemy who attempted to tamper with Leninism, became the supreme leader of the party, and seized power.

On October 18, 1924, Kamenev first criticized Trotsky's remarks. He wrote an article titled Trotskyism or Leninism. In it, he recorded the differences between Trotsky and Lenin during the October Revolution, believing that Trotskyism is far from an individual accident, but a typical manifestation of general historical trends. He is an agent of Menshevism and a slave to Menshevism.
On November 19, Stalin also delivered a speech on the title of Trotskyism or Leninism. He criticized Trotsky's strange talks in the field of October Revolution, pointing out that Trotskyism is a special ideological system that is completely incompatible with Leninism. Under the new historical conditions, Trotsky attempted to smuggle and cultivate some characteristics of Trotskyism and attempted to overthrow Leninism. The task of our party is to bury the trend of Trotskyism. On November 30, Zinoviev published an article about Bolkeshevism in Prajna, or Trotskyism. He believed that Trotsky's purpose was to try to correct or even directly eliminate Leninism.
From November 1924 to January 1925, at the party's newspapers and party activists, famous Bolshevik activists such as Bukharin, Bubnov, Molotov, Derrensky, Migoyan, and Kirov wrote articles and delivered speeches, condemning Trotsky and Trotskyism. Since Trotskyism or Leninism sharply opposed, Trotsky's failure in the debate was inevitable.
However, Stalin had a disagreement with Zinoviev and Kamenev on how to deal with Trotsky. Zinoviev and Kamenev demanded that Trotsky be expelled from his public office and party membership be eliminated and Trotsky was completely defeated. In response, Stalin said: The reason we did not agree with the suggestions of Zinoviev and Kamenev because we knew that the method of cessation was dangerous and contagious. If one person is cut off today, another person will be cut off tomorrow, and a third person will be cut off the day after tomorrow, then who will be left in our party? At that time, although Stalin opposed expelling Trotsky from the party, he did not oppose the necessary organizational punishment for Trotsky.

On January 15, 1925, Trotsky wrote a letter to the upcoming plenary session of the CPC Central Committee. The letter said: I cannot accept it anyway, saying that I have carried out a special line and falsely accused me of trying to correct Leninism. So, please remove my position as chairman of the Revolutionary Military Commission as soon as possible. On January 17, the Central Committee of the Communist Party of Russia and the Central Supervisory Commission held a joint plenary session. Trotsky said he was sick and did not attend, but the joint plenary session decided to give Trotsky the most severe warning and believed that Trotsky could not continue to work in the Soviet Revolutionary Military Commission. On January 26, the Presidium of the Central Executive Committee of the Soviet Union passed a resolution to remove Trotsky from the People's Commissar of the Army and Navy and Chairman of the Revolutionary Military Commission. At this point, as the founder of the Soviet Red Army, Trotsky officially lost his most proud military power.