After a long chase throughout Western Thrace the Bulgarian troops led by General Nikola Genev and Colonel Aleksandar Tanev surrounded the 10,000-strong Kırcaali Detachment under the command of Mehmed Yaver Pasha.^[56] Attacked in the surrounding of the village Merhamli (Now Peplos in modern Greece), only a few of the Ottomans managed to cross the Maritsa River. The rest surrendered in the following day on 28 November.

With the capitulation at Merhamli the Ottoman Empire lost Western Thrace while the Bulgarian positions in the lower current of the Maritsa and around Istanbul stabilized. With their success the Mixed Cavalry Brigade and the Kardzhali Detachment secured the rear of the 2nd Army which was besieging Adrianople and eased the supplies for 1st and 3rd Armies at Chatalja.