What does O5 stand for?

What does O5 mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: O5.

We've found a total of 2 definitions for O5:

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O5

Officer grade: Commander or Lieutenant Colonel

Governmental » Military

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O5

Österreich (Austrian) Resistance Group

Governmental » Military

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"O5." Abbreviations.com. STANDS4 LLC, 2016. Web. 1 Jul 2016. <http://www.abbreviations.com/O5>.