The abbreviation OPNstands for Open in the military field, especially in the US. You can find more abbreviations starting with OP here. Also take a look at our list with military acronyms.
What does the acronym OPN mean in military?
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The abbreviation OPNstands for Open in the military field, especially in the US. You can find more abbreviations starting with OP here. Also take a look at our list with military acronyms.
by
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