[1] In 1520, Suleiman became the Sultan at the age of 25, succeeding his father Selim I (who had himself more than doubled the size of the Empire through his own campaigns), and began a series of military conquests.

[3] His main opponents were Ferdinand I from the House of Habsburg (later the Holy Roman Emperor), and Tahmasp I of Safavid Persia.

[5] In 1521 the Ottomans captured Belgrade, which had been besieged unsuccessfully by Mehmed the Conqueror, and in 1526 the Battle of Mohács ended with the defeat of Louis II of Hungary.

[8] Although he was 72 years old and suffered gout to the extent that he was carried on a litter, he nominally commanded his thirteenth military campaign.

[29] The treaty confirmed the right of John Zápolya as a king of all Hungary, but recognised Ferdinand's possession of that part of the country that enjoyed the status quo.