How does Liam O'Flaherty use imagery in The Sniper?

O'Flaherty uses vivid imagery to describe Dublin in detail, providing us with a clear picture of exactly what is happening, as well as the cold calculations of those who take part. O'Flaherty illustrates the detachment of the participants, and he also illustrates the horrors of the reality..... the remorse, and the after-effects.

The sniper looked at his enemy falling and he shuddered. The lust of battle died in him. He became bitten by remorse. The sweat stood out in beads on his forehead. Weakened by his wound and the long summer day of fasting and watching on the roof, he revolted from the sight of the shattered mass of his dead enemy. His teeth chattered, he began to gibber to himself, cursing the war, cursing himself, cursing everybody.