The Yildirim Army Group or Thunderbolt Army Group of the Ottoman Empire (Turkish: Yıldırım Ordular Grubu) or Army Group F (German: Heeresgruppe F) was an Army Group of the Ottoman Army during World War I. While being an Ottoman unit, it also contained the German Asia Corps. Starting in June 1917, the Yildirim Army Group's first commander in chief was the former Prussian Minister of War and Chief of Staff Erich von Falkenhayn. Von Falkenhayn was replaced by General of the Cavalry Otto Liman von Sanders on 25 February 1918. After the Armistice of Mudros on 30 October 1918, Mustafa Kemal took command until the Group's dissolution a few days later. Tactics The army group included troops who used the latest Western-Front infiltration tactics; were equipped with close-combat gear, such as Stahlhelms and stick-grenades; and were supported by artillery and machine guns. World War I Order of Battle, August 1917 In August 1917, the army group was structured as follows: Yildirim Army Group (Müşir Erich von Falkenhayn) Seventh Army, Syria (Mirliva Mustafa Kemal Atatürk) III Corps 24th Division 50th Division XV Corps 19th Division 20th Division German Asia Corps Sixth Army, Mesopotamia (Mirliva Halil Kut) XIII Corps 2nd Division 6th Division XVIII Corps 14th Division 51st Division 52nd Division 46th Division with the 42nd Division 48th Division 59th Division XX Corps at Huj 16th Division 54th Division 178th Infantry Regiment 3rd Cavalry Division XXII Corps at Gaza 3rd Division 7th Division 53rd Division Order of Battle, January 1918 In January 1918, the army group was structured as follows: Yildirim Army Group (Müşir Erich von Falkenhayn) Seventh Army (Mirliva Fevzi Çakmak) III Corps 1st Division, 19th Division, 24th Division XV Corps 26th Division, 53rd Division 3rd Cavalry Division German Asia Corps Eighth Army (Ferik Cevat Çobanlı) XXII Corps 3rd Division, 7th Division, 20th Division 16th Division, 54th Division, 2nd Caucasian Cavalry Division Order of Battle, June 1918 In June 1918, the army group was structured as follows: Yildirim Army Group (Müşir Otto Liman von Sanders) Seventh Army (Mirliva Fevzi Çakmak) III Corps 1st Division, 24th Division, 3rd Cavalry Division XV Corps 26th Division, 53rd Division, 19th Division German Asia Corps Eighth Army (Ferik Cevat Çobanlı) XXII Corps 3rd Division, 7th Division, 20th Division 16th Division 54th Division 2nd Caucasian Cavalry Division Order of Battle, September 1918 In September 1918, the army group was structured as follows: Yildirim Army Group (Müşir Otto