The 1917 poem refers to the British Expeditionary Force, which German propagandists referred to as ‘mercenaries’ because at the outbreak of war, Britain’s army consisted of professional soldiers rather than conscripts or the later volunteers of ‘Kitchener’s Army‘. The BEF was practically wiped out by 1916.
A poem by Hugh MacDiarmid, ‘Another Epitaph on an Army of Mercenaries’ takes a very different view, regarding the BEF as ‘professional murderers’.
The setting by Geoffrey Burgon sung by Gillian McPherson on the soundtrack to the Dogs of War is much more dramatic, and very effective (even though some might doubt whether the poem is entirely appropriate in terms of this particular novel and movie). This is much simpler and fits the cycle I have in mind better. Still, I might rethink that. This is definitely a work in progress.
Here’s the Housman poem:
Epitaph on an Army of Mercenaries
These, in the day when heaven was falling,
The hour when earth’s foundations fled,
Followed their mercenary calling,
And took their wages, and are dead.
Their shoulders held the sky suspended;
They stood, and earth’s foundations stay;
What God abandoned, these defended,
And saved the sum of things for pay.