The Uskoks were irregular soldiers in Habsburg Croatia that inhabited areas on the eastern Adriatic coast and surrounding territories during the Ottoman wars in Europe. Bands of Uskoks fought a guerrilla war against the Ottomans, and they formed small units and rowed swift boats. Since the uskoks were checked on land and were rarely paid their annual subsidy, they resorted to acts of piracy.
Stitch with Uskok-ships chasing a large ship. Museum of Fortress Nehaj in Senj, Croatia.
During this defense of the Klis Fortress against an Ottoman invasion, an elite Croatian military faction of Uskoci was formed.
Nehaj Fortress in Senj, built by Ivan Lenković in 1558.
Another view of Nehaj in Senj
The Uskok War, also known as the War of Gradisca or the War of Friuli, was fought by the Austrians, Slovenes, Croats, and Spanish on one side and the Venetians, Dutch, and English on the other. It is named for the Uskoks, soldiers from Croatia used by the Austrians for irregular warfare.
Gradisca Castle