The war in this piece is a metaphor for suffering.
The soldiers who fought and never died are symbols for emotion and grief.
Altogether the meaning of the war in this poem is a direct metaphor for a singular person who has just faced something truly tragic and has lost control of both his emotions and his grief, along with his whole being of sanity. Until death split him apart.
Thus means the quote, "...and death forgets his name."
The input "soldiers" suffer eternity in Hell, which is pretty similar to Earth these days.
Hell is an over-admired concept in modern poems to me, it's a place that most humans have knowledge of and redo too much in thought of art.
So I replaced Hell with Earth in this poem.
Pax mea.