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 now for them; no prayers nor bells,
“Anger of the guns” is an example of  personification ; attributing human qualities to a nonhuman object or force. 
 
 These men don’t get to have a conventional death; they die surrounded by other rotting corpses. The sound of the bells calling them to heaven is drowned by the noise of battle.