He was appointed the commander of the Western Front of the Army of the Grand National Assembly (GNA), a position in which he remained during the Turkish War of Independence. He was promoted to the rank of Mirliva (arbitrarily the equivalent of Brigadier General or Major General; the most junior General rank with the title Pasha in the Ottoman and pre-1934 Turkish Army) after winning the First Battle of İnönü which took place between 9 and 11 January 1921. He also won the subsequent Second Battle of İnönü which was fought between 26 and 31 March 1921. During the Turkish War of Independence, he was also a member of the GNA in Ankara.