A variant was also recorded by the Government Rams (Good Work - If You Can Get It, trk#2, 2001, produced by Chris Andrews, St. John's, NL).
Note: In his original version of his song, Hamish Henderson commemorates The 51st Highland Division's Farewell To Sicily following the Allied invasion on July 10, 1943, considered to be the largest amphibious assault of the Second World War.
The Random House College Dictionary defines Jock as an innocent lad; a country boy. Other sources define Jock as a disparaging term for a Scottish soldier (like an English Tommy) and a nickname by such units as the British 9th (Scottish) Division, the Jocks.
The YouTube video below features a 12-string guitar performance of a variant by Tony Archibald from Port St. Mary on the Isle of Man.