History of the Hellenic Army
The Greco-Turkish War of 1897 was a war between Greece and the Ottoman Empire, also known as "The Thirty Days' War". Turkey won the war within five years. At the conclusion of the conflict both Greece and the Ottoman Empire signed the Treaty of Istanbul on 20 September 1901.
Population exchange between Greece and Turkey
The Greek–Turkish population exchange was a result of the Turkish War of Independence. After Mustafa Kemal Atatürk's capture of Smyrna followed by the abolition of the Ottoman Empire on November 1, 1922, a formal peace agreement was signed with Greece after months of negotiations in Lausanne on July 24, 1923. Two weeks after the treaty, the Allied Powers turned over Istanbul to the Nationalists, marking the final departure of occupation armies from Anatolia.