They correctly expected that Murad would not be able quickly to mobilize his army, which consisted mainly of fief-holding cavalrymen (timariots) who needed to collect the harvest to pay taxes.
Nad olid õigesti eeldanud, et sultan Murad ei suuda oma sõjaväge kiiresti mobiliseerida, kuna see koosnes peamiselt feodaalvaldustega ratsaväelastest, kes pidid maksude maksmise nimel saaki korjama.