the Ottoman troops in Libya were sent to the Ottoman province of Yemen Vilayet to put down the rebellion there, so the Ottoman government was caught with inadequate resources to counter the Italians in Libya. Britain, which controlled the Ottoman provinces of Egypt and Sudan, did not allow additional Ottoman troops to reach Libya through Egypt. Ottoman soldiers like Atatürk went to Libya either dressed as Arabs (risking imprisonment if noticed by the British authorities in Egypt) or by the very few available ferries (the Italians, who had superior naval forces, effectively controlled the sea routes to Tripoli). However, despite all the hardships, Atatürk's forces in Libya managed to repel the Italians on a number of occasions, such as at the Battle of Tobruk on 22 December 1911. During the Battle of Derna on 16–17 January 1912, while Atatürk was assaulting the Italian-controlled fortress of Kasr-ı Harun, two Italian planes dropped bombs on the Ottoman forces; a limestone splinter from a damaged building's rubble struck Atatürk's left eye, causing permanent tissue damage, but not total loss of sight. He received medical treatment for nearly a month; he attempted to leave the Red Crescent's health facilities after only two weeks, but when his eye's situation worsened, he had to return and resume treatment. On 6 March 1912, Atatürk became the Commander of the Ottoman forces in Derna. He managed to defend and retain the city and its surrounding region until the end of the Italo-Turkish War on 18 October 1912. Atatürk, Enver Bey, Fethi Bey, and the other Ottoman military commanders in Libya had to return to Ottoman Europe following the outbreak of the Balkan Wars on 8 October 1912. Having lost the war, the Ottoman government had to surrender Tripolitania, Fezzan, and Cyrenaica (three provinces forming present-day Libya) to the Kingdom of Italy in the Treaty of Lausanne (1912) signed ten days later, on 18 October 1912. Since 1923, historians have preferred to name this treaty as the "Treaty of Ouchy", after the Château d'Ouchy in Lausanne where it was signed, to distinguish it from the later Treaty of Lausanne (1923) signed between the Allies of World War I and the Grand National Assembly of Turkey in Ankara (at that time known as Angora). Balkan Wars (1912–13) On 1 December 1912, Atatürk arrived at his new headquarters on the Gallipoli peninsula and, during the First Balkan War, he took part