Most likely passage for the test:
What passing-bells for these who die as cattle?
Only the monstrous anger of the guns.
Only the stuttering rifles' rapid rattle
Can patter out their hasty orisons.
No mockeries for them from prayers or bells,
Nor any voice of mourning save the choirs,--
The shrill, demented choirs of wailing shells;
And bugles calling for them from sad shires.
Context: Owen contrasts the songs you would hear if you were attending a funeral mass with the sounds you hear of men dying at war. The choirs, he argues, are wailing shells. At war, you don't get nice funeral sounds, only the sounds, the anthem, of war.