John Andrew O'Brien was assigned to the 1st Marine Division.
John received the Purple Heart (PH)
Served during World War II
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The contained information on John Andrew 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. 1MARDIV . H&SCO, 1STPIONBN, 1STMARDIV, FMF.
H&SCO, 1STPIONBN, 1STMARDIV, FMF
World War II, 1941-1945
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