The Armistice of Salonica (also known as the Armistice of Thessalonica) was the armistice signed at 10:50 p.m. on 29 September 1918 between Bulgaria and the Allied Powers at the General Headquarters of the Allied Army of the Orient in Thessaloniki. The armistice came into force at noon on 30 September 1918.[1] The armistice would remain in effect until the conclusion of the Treaty of Neuilly-sur-Seine, the final general peace treaty, in November 1919.
The Kingdom of Bulgaria entered World War I on the side of the Central Powers on 14 October 1915, invading and occupying parts of Serbia. However, Bulgarian forces would struggle against the Vardar offensive launched by the Allies in September 1918, causing part of the Bulgarian Army to collapse, and an open mutiny of rebellious troops who proclaimed a republic at Radomir.[2] The Bulgarian government then requested a ceasefire on 24 September. The terms included the withdrawal of Bulgarian forces in occupied areas and demobilization of most of Bulgaria's army.[1]