Gethsemane
I've been looking for this for years. It's Peter Bellamy's setting of Kipling's Great War poem "Gethsemane". Bellamy included it on the album "Mr Kipling Wrote Exceedingly Good Songs" which- at the time of writing- is unobtainable in any form. Here it's sung by Andrew King in a version taken from his Album The Amfortas Wound.