The beginning of The Siege of Nándorfehérvár (1456)
On 4 July 1456, one of the most decisive confrontations of the Ottoman–Hungarian wars began: the Siege of Nándorfehérvár, known today as Belgrade. This clash would become a defining moment in late medieval European history, halting Ottoman expansion into Central Europe and cementing the city’s strategic importance at the crossroads of empires. Strategic importance of Nándorfehérvár Nándorfehérvár stood at the confluence of the Danube and Sava rivers, guarding the southern gateway to the Kingdom of Hungary. Whoever controlled the fortress could project power deep into Central Europe. After the Ottoman capture of Constantinople in 1453, Sultan Mehmed II, known as the Conqueror, turned his attention northward. Hungary was the next major obstacle to Ottoman dominance in the region, and Nándorfehérvár was its strongest bulwark. The Ottoman offensive In early summer 1456, Mehmed II led a massive army — estimates range from 60,000 to over ...