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  The Battle of Verdun was the longest battle of World War I and was one of the bloodiest.
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  the major naval battle of the war
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  •April 6 -
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  Fighting ends on the 11th hour of the 11th day of the 11th month.
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  A very long and bloody war that lasted fro 6 years.
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  The most torturous concentration camp they had.
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