Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym S-3 is...

S-3 is

  • Army Operations Staff at the Battalion/Brigade level

S-3 is also in:

Acronym Definition Searched: BANY ta 23316 CQ IPS 04680 SM PGP NSAFU KWQC APWU CLR DUQ GCCC PK