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Sergeant John O'callaghan was assigned to the US Army.

John received the Medal Of Honor

Served during

Medal of Honor Ribbon

Please contact us with any biographical data, pictures or other information regarding the service and life of John O'callaghan, Medal of Honor recipient.

The contained information on John O'callaghan is gathered and extracted from military records from a variety of sources. This material in no way represents this serviceman's complete military record; we welcome additional material. If you can help add to Sergeant John O'callaghan's military record please contact us. This can include award citations and photos. . .