He led the Turkish Army to victory in key battles, including the First and Second İnönü, the Battle of Sakarya, and the Great Offensive (Büyük Taarruz), ultimately liberating Anatolia from enemy occupation.
The Treaty of Lausanne, signed on July 24, 1923, secured Türkiye's independence and international recognition.
On October 29, 1923, the Republic of Türkiye was declared, and Mustafa Kemal Atatürk became its first president, serving until his death in 1938.
During his presidency, he implemented major reforms in governance, economy, agriculture, and foreign policy, including industrial planning, regional treaties, and modernization of Turkish agriculture.
He personally oversaw the integration of Hatay into Türkiye, calling it "my personal matter," which was achieved in 1939.
Atatürk passed away at 57 on November 10, 1938, at Dolmabahçe Palace, leaving a lasting legacy of independence, sovereignty, and reform.
His funeral was held on November 19–21, 1938, with his body later interred at Anıtkabir in 1953.