What does FO mean in US Government?

This page is about the meanings of the acronym/abbreviation/shorthand FO in the Governmental field in general and in the US Government terminology in particular.

Foreign Office

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What does FO mean?

field-grade officer, field officer, FO(noun)
an officer holding the rank of major or lieutenant colonel or colonel

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"FO." Abbreviations.com. STANDS4 LLC, 2017. Web. 17 Oct. 2017. <http://www.abbreviations.com/term/208533>.