What does S/M mean in Governmental & Military

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All S/M meanings

What does S/M stand for?

S/M stands for "Submarine"

How to abbreviate "Submarine"?

"Submarine" can be abbreviated as S/M

What is the meaning of S/M abbreviation?

The meaning of S/M abbreviation is "Submarine"

What does S/M mean?

S/M as abbreviation means "Submarine"