The occupation of Constantinople and Smyrna by the Allies in the aftermath of World War I prompted the establishment of the Turkish national movement. Under the leadership of Mustafa Kemal Pasha, a military commander who had distinguished himself during the Battle of Gallipoli, the Turkish War of Independence was waged with the aim of revoking the terms of the Treaty of Sèvres.By 18 September 1922, the occupying armies were expelled, and the new Turkish state was established. On 1 November, the newly founded parliament formally abolished the Sultanate, thus ending 623 years of Ottoman rule. The Treaty of Lausanne of 24 July 1923 led to the international recognition of the sovereignty of the newly formed "Republic of Turkey" as the successor state of the Ottoman Empire, and the republic was officially proclaimed on 29 October 1923 in Ankara, the country's new capital. Mustafa Kemal became the republic's first President and subsequently introduced many radical reforms with the aim of founding a new secular republic from the remnants of the country's Ottoman past. With the Surname Law of 1934, the Turkish Parliament bestowed upon Mustafa Kemal the honorific surname "Atatürk" (Father of the Turks.)