His successful campaigns Military_operation expanded Expansion the Bulgarian borders into Thessaly and Epirus and in 998 he conquered Conquering the principality of Duklja .

On 19 October Murad II used Using his `` sipahi '' cavalry from Thessaly to envelop Besieging the cavalry on the Crusader left flank , along with a general assault Attack all along the line to distract Preventing_or_letting Hunyadi from the primary effort .

Most of the war was fought Hostile_encounter in Macedon as well as neighbouring Thessaly , where the Roman troops were stationed Placing .