The article reconstructs the history of the campaign of the Ryazan Razryad Regiment (Discharge Corps) in the North-Eastern Azov Sea area – the most poorly studied operation of the Russian-Turkish War of 1686–1699 based on the archival material. The specific dates of the campaign, the number and composition of the troops participating in it, their exact route is determined. The goals of the military expedition were to protect the region and build a port and a fortress on the northern coast of the Azov Sea.
