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OLC is Oak Leaf Cluster
It often means the native state/country from where the man came from.
It shows that the serviceman was awarded the Army Achievement Medal six times.
The web address of the Michigan Military History Msm is: http://www.viersonboiler.com
The phone number of the Michigan Military History Msm is: 616-974-1955.
The address of the Michigan Military History Msm is: 4900 37Th St SE, Grand Rapids, MI 49512
Naval? Aviation machinists mate
The acronym MSM does not necessarily mean a homosexual. It is a commonly used abbreviation in medicine and psychology to denote men who have sex with men (MSM).
AM is Air Medal ARCOM is Army Commendation Medal
It could mean that they were awarded the Legion of Merit. See the link to the right for a memo on the meaning of the award published by the Department of the Army.
George Washington farted so much he died
AM stands for Air Medical, assuming you are talking about a government issued military marker.