Border Fortress System – System of forts as last line of defense. There were two kinds. The first was built by the powerful Hungarian Kingdom against the Turks in the 15th century along the southern part of Historic Hungary, along the lower reaches of the Danube River, including the present Belgrade (Nándorfehérvár in Hungarian) and along the Száva and Dráva rivers (now in Croatia and Serbia). After the lost battle of Mohács against the Ottoman Turks in 1526, Hungary fell into three parts, thus a second defense system became necessary. It was established throughout the central part of Hungary and provided defense against further Turkish expansion. At the beginning of this era 40 fortresses with 10,000 soldiers, including infantry, cavalry and gunners withstood the Turks. This number grew to 200 forts and 150,000 soldiers until the end of the 17th century. Following the takeover of Buda from the Turks in 1686; and after the Turks were gradually expelled from Hungary, most of the soldiers were dismissed from the forts. They became the so-called “exiles” (bújdosók). They soon joined the insurgents of Count Imre Thöhöly and later the War of Liberation led by Prince Ferenc (Francis) Rákóczi II (1703-1711). To prevent future Hungarian uprisings the Austrians blew up most of the fortresses at the end of the 18th century. – B: 1138, 1020, T 7656.→Thököly, Count Imre; Rákóczi II, Prince Ferenc.