By 1918 the Bulgarian Army was suffering from chronic shortages of food, ammunition and low morale. Desertion, including in the Second army, became more frequent. The Entente was well aware of the crisis in the Bulgarian Army and planned to break the Macedonian front with a large offensive again directed against the Eleventh and First armies. On 14 September the Serbians and French attacked at Dobro Pole and achieved a breakthrough. Two days latter the British and Gree attacked the Bulgarian First Army at Doiran but suffered a heavy defeat. The commander of the First Army general Stefan Nerezov proposed a counterattack with his forces and the Second Bulgarian Army but after some hesitation was refused permission. So for much of the Entente offensive the Second Army, with its 48 battalions, 251 cannons and 462 machine guns, limited itself with sending small reinforcements to the First Army. Nonetheless, the army continued to hold the Struma line and foiled a Greek attempt to capture Serres, gaining a few cannons as trophies. The overall situation however forced the Bulgarian government ask the Entente for an armistice and general Ivan Lukov was dispatched to Salonika for the negotiations with general Franchet d'Esperey. The talks reached a successful conclusion and the armistice was signed on 29 September 1918. This marked the end of Bulgarian participation the Great War.