After the success of the uprising on 7–8 November 1917, Trotsky led the efforts to repel a counter-attack by Cossacks under General Pyotr Krasnov and other troops still loyal to the overthrown Provisional Government at Gatchina. Allied with Lenin, he defeated attempts by other Bolshevik Central Committee members (Zinoviev, Kamenev, Rykov, etc.) to share power with other socialist parties. By the end of 1917, Trotsky was unquestionably the second man in the Bolshevik Party after Lenin. He overshadowed the ambitious Zinoviev, who had been Lenin's top lieutenant over the previous decade, but whose star appeared to be fading. This reversal of position contributed to continuing competition and enmity between the two men, which lasted until 1926 and did much to destroy them both.