Claim: The Ottomans, with an army 38,000 strong, commanded by the Bosnian Beyelerbey Hasan Predojević (c. 1530 – 22 June 1593), needed to win the Battle of Sisak in order to expand northward into central Europe virtually unopposed
Evidence: The Battle of Sisak (Croatian: Bitka kod Siska; Slovene: Bitka pri Sisku; German: Schlacht bei Sissek; Turkish: Kulpa Bozgunu) was fought on 22 June 1593 between Ottoman regional forces of Telli Hasan Pasha, a notable commander (Beglerbeg) of the Eyalet of Bosnia, and a combined Christian army from the Habsburg lands, mainly Kingdom of Croatia and Inner Austria.