[1] The division was established in 1915 on the idea of the leadership of the vormer Internal Macedonian Revolutionary Organization (IMRO) -leadership around Colonel Aleksandar Protogerov.
As early as January 1915, Major Petar Darvingov submitted to the Ministry of War a report on the use of the Macedonian-Adrianople Volunteer Corps, in which he argued that the re-formation of the militia could be necessary and justified mainly if it was given the task of occupying the region of Macedonia.
The commander of the division at the beginning was General Krastyu Zlatarev from Ohrid, and the chief of staff was Colonel Petar Darvingov from Kukush.
The personnel of the division was constantly replenished by soldiers who deserted from the Serbian army to the Bulgarian or to the allied to Bulgaria Austro-Hungarian troops.
The following year, 1916, another artillery regiment was added to the 11th Division and it entered the fighting against British units in the Struma Valley.