Frederick II, King of Prussia and Joseph II in 1760 (engraving)

Frederick II (German: Friedrich II.; 24 January 1712 – 17 August 1786) was King in Prussia (1740–1786) of the Hohenzollern dynasty. He is best known for his brilliance in military campaigning and organization of Prussian armies. He became known as Frederick the Great (Friedrich der Große) and was nicknamed Der Alte Fritz ("Old Fritz"). He was a grandson of George I of Great Britain, and a nephew of George II. Joseph II (Joseph Benedikt Anton Michael Adam; 13 March 1741 – 20 February 1790) was Holy Roman Emperor from 1765 to 1790 and ruler of the Habsburg lands from 1780 to 1790. He was the eldest son of Empress Maria Theresa and her husband, Francis I, and was the brother of Marie Antoinette.