Harold Courtenay ArmstrongFrancis Harold Courtenay Lupin Armstrong, commonly known as Harold Courtenay Armstrong or H. C. Armstrong, was a British sea captain and historian.BiographyDuring World War I Armstrong was captured by the Turks in the Siege of Kut, where he subsequently was forced to march to Turkey as a prisoner of war. Following a failed escape Armstrong was imprisoned for six months. Following his release from prison, he was appointed Staff Officer for all prisoners of war. In a notably, he served as both prosecutor and interpreter during Turkish courts-martial proceedings against prisoner of war camp commanders accused of mistreating prisoners.