The goal of this paper is the outline of the Habsburg-Ottoman relations in the 1560s, which were affected by another conflict in Hungary. A special interest is put on the Turkish War of 1566.
The pretext of the war was given by the Habsburg attempts to occupy Transylvania, which was a vassal of the Sublime Porte in that time. The Emperor Maximilian II was neither ready to make the annual payment to the Ottomans nor to accept the Hungarian royal title of John II.
Sigismund Zápolya, the ruler of Transylvania. Beside the political and military affairs of that period this paper tries to answer the question from where and how much money the Habsburgs received for their struggle against the Ottomans in Hungary.