Bulgarian Armistice 1918: World War I

20.09.2025 | History

On September 20, 1918, Bulgaria accepted the Austro-Hungarian offer of an armistice, marking the end of its participation in World War I. The Treaty of Neuilly, signed later, imposed harsh conditions and determined the country's fate for the following decade.

Снимка от Unidentified, from the Royal Engineers collection, Wikimedia Commons (Public domain)

On September 20, 1918, the Bulgarian government, under the weight of growing internal tension and army rebellion, made a fateful decision: it accepted the Austro-Hungarian proposal for a general armistice, received on September 14.

This is a turning point in the First World War for Bulgaria, marked by a deep crisis. Instead of insisting on continuing military operations towards Thessaloniki, as General Vladimir Vazov would probably have suggested, the government in Sofia turned to negotiations for an armistice with the Entente.

The decision, taken in an atmosphere of uncertainty and tension, marks the end of Bulgaria"s participation in the conflict on the side of the Central Powers.

Conclusion of the Armistice and the Treaty of Neuilly

The armistice concluded on September 29, 1918, in Thessaloniki ended the hostilities, albeit temporarily. It was in effect until the signing of the Treaty of Neuilly on November 27, 1919, a treaty that would have severe consequences for Bulgaria.

Conditions imposed by the Entente were marked by a sharp inequality.

The Harsh Conditions of the Treaty of Neuilly

The Treaty of Neuilly imposed harsh conditions on Bulgaria. According to it, the Bulgarian army was subjected to radical reduction and disarmament.

This heavy legacy of the war is a direct result of the cabinet"s decision of September 20, 1918, as noted by the "Reference" department of BTA. A decision that sealed Bulgaria"s fate for at least the next decade.