With the division, from May 1920 he fought in the Polish–Soviet War, participating in engagements at Zhytomyr, Novohrad-Volynskyi, Lviv, and Zamość. Following the Soviet defeat in the war the division transferred to Crimea to fight in the Perekop-Chongar Offensive against White forces in November, then fought against the anarchist Revolutionary Insurrectionary Army of Ukraine. For his actions, Morozov was awarded a ceremonial shashka by the Revolutionary Military Council in 1922.