Outbreak of the Austro-Ottoman Long War

Timeline

1. 1567–1568Vienna and Istanbul · Habsburg MonarchyAfter the Battle of Szigetvár power was reorganized in central Hungary, and the allegiance of Transylvania and its vassal states became disputed. Diplomatic negotiations between the two sides failed in 1567–1568, and small-scale frontier clashes escalated, paving the way for full-scale war.
2. 1568Western Hungarian frontier · HungaryIn the summer of 1568 Ottoman forces launched a large-scale offensive on the Hungarian frontier, targeting strategic fortresses such as Győr. The Habsburg coalition organized its defense along the Croatian-Hungarian border, and the Long War officially began.