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A milecastle was a fortified structure that stood along Hadrian's Wall in Great Britain. Its primary duty was a gatehouse and garrison that controlled passage across the frontier. These structures were separated by distances of about one mile.
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A milecastle was a fortified structure that stood along Hadrian's Wall in Great Britain. Its primary duty was a gatehouse and garrison that controlled passage across the frontier. These structures were separated by distances of about one mile.
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