Then followed the protracted Macedonian Struggle between Greeks and Bulgarians in the region, the resultant guerrilla war not coming to an end until the revolution of Young Turks in July 1908. Bulgarian and Greek rivalries over Macedonia became part of the Balkan Wars of 1912–13, with the 1913 Treaty of Bucharest awarding Greece large parts of Macedonia, including Thessaloniki. The Treaty of London (1913) awarded southern Epirus to Greece, the Epirus region having rebelled against Ottoman rule during the Epirus Revolt of 1854 and the Epirus Revolt of 1878.