Answer:
If in some smothering dreams you too could pace Behind the wagon that we flung him in, And watch the white eyes writhing in his face, His hanging face, like a devil's sick of sin; If you could hear, at every jolt, the blood Come gargling from the froth-corrupted lungs, Obscene as cancer, bitter as the cud Of vile, incurable sores on innocent tongues (Wilfred Owen, “Dulce Et Decorum Est”)
Explanation:
The above excerpt shows how war changes soldiers. This is because the excerpt shows the horrors that soldiers are forced to witness, among their combat friends, or among any citizen who has been hit and is suffering in agony or dying. In short, the passage shows how the visions that a war brings about are bad and dreadful, both for the living and the dead.
These horrors change the soldiers' view of the war, of themselves, of the reason that makes them fight and of the world in general.