The lieutenant's numb state in "An Episode of War" is primarily caused by the shock and trauma of being wounded in battle. The sudden and unexpected injury disrupts his sense of self and triggers a dissociative response, leading to a detached and disconnected emotional state. Additionally, the lieutenant's focus on the practical aspects of his injury, such as the missing portion of his arm, further contributes to his numbness as he grapples with the immediate physical consequences of war.
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