Lishchuk D. Intelligence support of military activity of the Zaporozhian Army at the end of XVI - the first quarter of XVII century.

On the basis of studying of a wide range of archival documents and scientific works the thesis deals with the structure, forms and methods of activity of the Zaporozhian Army's intelligence component at the end of XVI - the first quarter of XVII century. Here are shown the main factors determining the tasks of intelligence such as participation of Cossacks in the antifeudal and national liberating fight of the Ukrainian people against Poland, participation in protection of the Ukrainian land and Europe from the Turkish and Tatar aggression, the active role of Cossacks in upholding religious rights of the Ukrainian people. The thesis forms and methods of intelligence and counterintelligence during the war on land and at sea, the usage of diplomatic channels to collect information.