"Onward, Christian Soldiers" is a 19th century English hymn. The words were written by Sabine Baring-Gould in 1865, and the music was composed by Arthur Sullivan in 1871. Sullivan named the tune "St. Gertrude," after the wife of his friend Ernest Clay Ker Seymer, at whose country home he composed the tune. The Salvation Army adopted the hymn as its favoured processional.Branston, John. Memphis Flyer, 18 November 2005 The hymn's theme is taken from references in the New Testament to the Christian being a soldier for Christ, for example II Timothy 2:3 (KJV): "Thou therefore endure hardness, as a good soldier of Jesus Christ."