the man who would be king

[clayhumour]

What is the hymn sung by sean connery & Michael caine in the film 'The man who would be king'

[The Rut]

The main theme of the movie is an old Irish air "The Moreen" to which Thomas Moore wrote the lyrics "The minstrel boy to the war is gone." However the words sung by Daniel and Peachie are from the Christian Hymn "The Son of God goes forth to war" by Reginald Heber.