Having failed to locate the main Ottoman army, whom he believed to still be at their capital in Edirne, Hunyadi was caught by surprise on 17 October when the Ottoman army appeared in front of his men at Kosovo Field. He constructed a tabor wagon fort at Plementina hill from which to fight the Ottomans, who built their own stockade in response. Cavalry skirmishing on the flanks of the stockades during the first two days and a Crusader night-time attack using their wagons and guns against the Sultan's central position on the night of 18/19 October produced much bloodshed but no conclusive results.