The Bulgarian First Army was a Bulgarian field army during the Balkan Wars, World War I and World War II. Balkan Wars First Balkan War Following the military reforms of 1907 the territory of the Bulgarian Kingdom was divided into three Army Inspectorates. Each of them was further divided into three division districts and in war time formed a field army. The First Army was formed by the First Army Inspectorate, which had its headquarters in Sofia and controlled the First, Sixth and Seventh divisions. However, because of different circumstances the 7th and 6th divisions were detached from the First Army and replaced by the 3rd and newly formed 10th division, which were otherwise part of the Second Army Inspectorate. Thus after the declaration of general mobilization in September 1912 the army consisted of three infantry division and a cavalry regiment. However, only the 3rd division had its full wartime strength of three infantry brigades while the 10th division was formed by one brigade from the 1st division and another one from the 6th division. Hence it was called the "Mixed" division. The order of battle on 4 of October 1912 O.S. was as follows: The Bulgarian plan placed the First Army commanded by Lieutenant General Vasil Kutinchev in the center of the battle line and its task was to advance rapidly, engage the main Ottoman forces positioned between Kirk Kilisse and Adrianople and position itself so it could assist both the Second Army on the right flank and the Third Army on the left flank. To achieve this as soon as the advance began the 1st Brigade of the 3rd division was temporary assigned to the Second Army while the rest of the army advanced in the space between the two fortresses. In the ensuing Battle of Kirk Kilisse, in which the Ottoman Eastern Army was defeated and retreated, the First Army bore the brunt of the fighting and suffered the greater part of the 5,745 Bulgarian casualties in that battle. The Bulgarian command ordered a couple of days' rest so that the forces can regroup before pursuing the enemy. When the advance was renewed the First Army left behind the entire 3rd division around Adrianople to protect against attacks from the right flank. The Ottoman Army meanwhile had consolidated and reinforced itself on a new line from Lule Burgas to Bunar Hisar. The Bulgarians decided to carry out