 Complete the following phrase:  . This gave him extra cavalry, mainly under Togay Bey. The Poles tried, with occasional success, to split the alliance. Crimean horsemen accompanied Khmelnytsky on this 1648 campaign when he got almost as far as Lviv. Next year Islyam helped win the Battle of Zboriv 1649. The withdrawing Tatars were permitted to ravage the country they passed through. Some claim that Islyam was bribed by the Poles and that he ravaged mostly Cossack territory. In 1651 the Poles sent a large army and won the Battle of Beresteczko because the Tatars fled the field. Khmelnytsky went after them and was held hostage for a while by Islyam. In 1652, following the 