Manton served in the United States Marine Corps during the Korean War.

Entity and relation annotations:
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type: entity
value: text: Manton
labels: <Person>
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value: text: the United States Marine Corps
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type: entity
value: text: during the Korean War
labels: <Date>
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type: entity
value: text: the Korean War
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labels: Person:belongs_to_NORP:Organization
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