What does OO mean in Governmental & Military

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All OO meanings

What does OO stand for?

OO stands for "Orderly Officer"

How to abbreviate "Orderly Officer"?

"Orderly Officer" can be abbreviated as OO

What is the meaning of OO abbreviation?

The meaning of OO abbreviation is "Orderly Officer"

What does OO mean?

OO as abbreviation means "Orderly Officer"