Carl Theodor Körner (German pronunciation: [ˈkaʁl ˈteːodoːɐ̯ ˈkœʁnɐ]; 23 September 1791 – 26 August 1813) was a German poet and soldier. After having lived for some time in Vienna, where he wrote some light comedies and other works for the Burgtheater, he became a soldier and joined the Lützow Free Corps in the German uprising against Napoleon. During this time, he displayed personal courage in many fights, and inspired his comrades by fiery patriotic lyrics he composed. One of these was the "Schwertlied" ('Sword Song'), composed during a lull in fighting, only a few hours before his death, and "Lützow's wilde Jagd", each set to music by both Carl Maria von Weber and Franz Schubert. He was often called the "German Tyrtaeus".