The Karakol society or Sentinel Association (Turkish: Karakol Cemiyeti) was a secret society outside of, yet within the Istanbul government, whose purpose was to assist the efforts of Mustafa Kemal Atatürk during the 1919-1923 Turkish War of Independence.
After the 1918 Armistice of Mudros Ottoman officers founded the secret organizations in Istanbul. The aim of these organizations was to provide the revolution with loyal officers, weapons and armaments, most of which was stolen from Ottoman Army warehouses, which were under the control of Allied Forces during the Occupation of Istanbul.
The activities of the intelligence unit came to an end when its members were arrested following the occupation of Istanbul on March 16, 1920.
- Shaw, Stanford J.; Ezel Kural Shaw (1977). History of the Ottoman Empire and Modern Turkey: Reform, Revolution, and Republic: The Rise of Modern Turkey 1808-1975. Cambridge University Press. p. 340. ISBN 0-521-29166-6.
- History of the MIT, National Intelligence Organization