Naval units and formations

large formation of warships within a navy

right|thumb|300px|A Spanish flotilla being engaged by the Royal Navy in the [[action of 5 October 1804]]

military unit size class used by naval forces, usually comprising a number of ships

type of naval fleet with an aircraft carrier

type of US Navy unit

non-standing, military force

central command of all NATO maritime forces

military unit

Šajkaši (In Serbian, , ) refers to the river flotilla troops guarding the Danube and Sava, and especially, the Port of Belgrade, against the Ottoman Empire from the 16th to the 19th century. During that period, the rivers were natural borders of the Kingdom of Hungary and Habsburg monarchy with the Ottoman Empire, part of the Military Frontier. The troops were composed of ethnic Serbs, who had special military status. Their name derives from the small wooden boat known as chaika (šajka, tschaiken), a type of galley.