Preparations
Both sides took careful preparations. Michael called in his ally Basarab of Walachia who sent him a strong unit, as well as detachments of Ossetians and Tartars. Michael's army was estimated by contemporaries to be 12,000 strong (which is fairly possible number). Stefan Uroš strengthened his army by more Spanish and German mercenaries, experienced warriors which presented an elite unit of Serbian army which comprised approximately the same number of fighters as the Bulgarian.
The Battle and its Results
Upon reaching his enemy, Stefan acted quickly: after a nights rest (and prayer) he attacked his enemy without much hesitation, perhaps before all Bulgarian units could be mustered from their looting.
hier steht was vom looting und sowas. tatsaechlich hatten die beiden koenige, die eigentlich verwandt waren ein tagesabkommen fuer frieden. der bulgarische zar lies die soldaten in den nahliegenden doerfer ausruhen, dann erfolgte der angriff - sehr tykisch und irgendwie serbisch.
in dem chaos geriet der bulgarische zar mit seiner abteilung direkt unter der attacke der schwergepanzerten spanischen und deutsche ritter, die persoehnlich vom sohn des serbischen koenig gefuehrt wurden.