trauma of the soldier is then shown
caesura used after 'blink', 'sleep', 'wink' for seperation and to emphasise them
caesura creates shock due to the pause, which reflects disrupted mind
cannot find peace even whilst sleep, shows trauma and shock
allusion "his bloody life in my bloody hands" - alludes to Macbeth, guilt as he killed a "possibly" armed man - war crime
repition of "possibly armed, probably not" - guilt, constant distress