The Fourth Army of the Ottoman Empire (Turkish: Dördüncü Ordu) was one of the field armies of the Ottoman Army. It was formed in the middle nineteenth century, during Ottoman military reforms. The army did not survive the WWI battles in Palestine and Syria. Formations Order of Battle, 1877 In 1877, it was stationed in Anatolia. It was composed of: Infantry: Five line regiments and six rifle battalions Cavalry: Three line regiments Artillery: One line regiment (12 batteries) Engineer: One sapper company Order of Battle, 1908 After the Young Turk Revolution and the establishment of the Second Constitutional Era on 3 July 1908, the new government initiated a major military reform. Army headquarters were modernized. The Fourth Army's new operational area was Caucasia and its many troops were scattered along the frontier to keep an eye on the Russian Empire. It commanded the following active divisions and other units: 7th Infantry Division (Yedinci Fırka) 8th Infantry Division (Sekicinci Fırka) 19th Infantry Division (On Dokuzuncu Fırka) 4th Artillery Division (Dördüncü Topçu Fırkası) Erzurum Fortress Artillery Regiment The Fourth Army also had inspectorate functions for four Redif (reserve) divisions: 13th Erzincan Reserve Infantry Division (On Üçüncü Erzincan Redif Fırkası) 14th Trabzon Reserve Infantry Division (On Dördüncü Trabzon Redif Fırkası) 15th Diyarbekir Reserve Infantry Division (On Beşinci Diyarbekir Redif Fırkası) 16th Sivas Reserve Infantry Division (On Altıncı Sivas Redif Fırkası) Order of Battle, 1911 With further reorganizations of the Ottoman Army, to include the creation of corps level headquarters, by 1911 the Army's headquarters were Baghdad. Before the First Balkan War in 1911, the Army was structured as: Army Headquarters, Baghdad XII Corps, Musul 35th Infantry Division, Musul 36th Infantry Division, Kerkük XIII Corps, Baghdad 37th Infantry Division, Baghdad 38th Infantry Division, Basra World War I Order of Battle, November 1914 In November 1914, the army was structured as: Fourth Army (Syria) VIII Corps 23rd Division 25th Division 27th Division XII Corps 35th Division 36th Division Order of Battle, Late April 1915 In April 1915, the army was structured as: Fourth Army (Syria) VIII Corps 8th Division 10th Division 23rd Division 25th Division 27th Division XII Corps 35th Division 36th Division Order of Battle, Late Summer 1915, January 1916 In late Summer 1915, January 1916, the army was structured as: Fourth Army (Syria-Palestine) VIII Corps 23rd Division 24th Division 27th Division XII Corps 41st Division 42nd Division 46th Division Order of Battle, August,