What does OO mean in Governmental & Military

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All OO meanings

What does OO stand for?

OO stands for "Ordnance Officer"

How to abbreviate "Ordnance Officer"?

"Ordnance Officer" can be abbreviated as OO

What is the meaning of OO abbreviation?

The meaning of OO abbreviation is "Ordnance Officer"

What does OO mean?

OO as abbreviation means "Ordnance Officer"