Thomas Hardy's poem 'The Man He Killed' explores the absurdity and irony of war. The speaker reflects on how, under different circumstances, he might have shared a drink with the man he killed in battle. The poem highlights the randomness of war, where individuals who might have been friends are forced into enmity by circumstances beyond their control. The speaker's justification for killing—simply because the other was labeled a 'foe'—underscores the senselessness of war. Hardy uses a conversational tone and simple language to convey the deep moral conflict and the tragic nature of war, where societal labels dictate actions that contradict personal inclinations. The poem is a critique of the impersonal nature of war and the arbitrary reasons for which men are driven to kill each other.