What does OIS mean in Governmental & Military

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All OIS meanings

What does OIS stand for?

OIS stands for "Officer Indoctrination School"

How to abbreviate "Officer Indoctrination School"?

"Officer Indoctrination School" can be abbreviated as OIS

What is the meaning of OIS abbreviation?

The meaning of OIS abbreviation is "Officer Indoctrination School"

What does OIS mean?

OIS as abbreviation means "Officer Indoctrination School"