John Joseph O'Brien was assigned to the 3rd Marine Division.
John received the Purple Heart (PH)
Served during World War II
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The contained information on John Joseph O'Brien 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 John O'Brien's military record please contact us. This can include award citations and photos. 3MARDIV . CO.A, 1STBN, 21STMAR, 3RDMARDIV, FMF, MARIANAS ISLANDS.
CO.A, 1STBN, 21STMAR, 3RDMARDIV, FMF, MARIANAS ISLANDS
World War II, 1941-1945
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