A poet knows war without objective war in the world; it was conflict at the root of his mind that impelled him to the masking of these conflicts in the apparent resolution and order of works of art.In a dialectical sense, all poetry is war.
The war may present or force a subject; it may bring out a poet, or shock him onto a sensibility of silence. It may kill him. Or germinate the best war poems for exfoliation years after the event.
Poems in a way are spells against death. They are milestones, to see where you were then from where you are now. To perpetuate your feelings, to establish them. If you have in any way touched the central heart of mankind's feelings, you'll survive.