sentences:  The Hungarian and the Karamanid Turkish armies were supposed to attack the Ottoman Empire simultaneously.In the spring of 1443, before the Hungarians were ready, the Karamanids attacked the Ottomans and were devastated by Sultan Murad II's full army.The Hungarian army, led by King Vladislaus, who had come to the throne three years earlier in contentious circumstances, the Hungarian general John Hunyadi, and Serbian Despot Đurađ Branković, attacked in mid-October.