Battle near Didymoteichon fortress

The armies of the emperors John VI Kantakouzenos and John V Palaiologos, once again at war, fought near Didymoteichon fortress. Bulgarian and Serbian troops supported John V, while Süleyman's Ottoman forces fought on the other side. The Ottomans decided the battle in their ally's favour and then raided the areas around Philippopolis, Diampolis and Aytos for plunder.