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PolicyPolicy change

The Marine Corps is replacing "AI" with "SI" in official documents

MARADMIN 521/26·October 23, 2026·2 min read·Official source

The Marine Corps issued this MARADMIN to comply with an executive order signed 29 September 2026, which directed the federal government to stop using the terms "Artificial Intelligence" and "AI" in official contexts and replace them with "Super Intelligence" (SI). Nothing about the underlying technology changed. It's a terminology switch, not a policy overhaul.

★ Affects all reservists: Starting now, use "Super Intelligence" and "SI" instead of "Artificial Intelligence" and "AI" in any official Marine Corps document, brief, website, or correspondence you produce or maintain.

Who it affects

This applies to the Marine Corps Total Force, which means active duty, reserve, and civilian Marine Corps personnel alike. If you write, review, or publish anything official, this touches you. That includes SMCR unit staff, IMAs assigned to commands, and anyone who produces briefings, training materials, reports, or web content in a Marine Corps capacity.

What you need to do

If you own or maintain official content, here's what to do:

  1. Stop using "AI" and "Artificial Intelligence" in new official documents, briefs, reports, and correspondence. Use "SI" and "Super Intelligence" instead.
  2. Update any websites or reusable templates you own when you next touch them.
  3. When you revise existing documents, apply the new terminology at that time.
  4. Do not alter already-published historical records, contracts, or grants. Those stay as-is.
  5. When directly quoting a law, regulation, or official source title that still uses "AI," preserve the original wording of that quote. The rule applies to your own writing, not to verbatim citations.

If you're a leader, make sure your Marines and civilians who produce official products know about this change.

Key dates

  • 29 Sep 2026: Executive Order 14434 signed, establishing the SI terminology policy.
  • Effective immediately: MARADMIN 521/26 directs Marine Corps compliance now, applied when issuing or revising documents going forward.

The official version

See MARADMIN 521/26 for the full text.

Referenced orders: Executive Order 14434 (29 Sep 2026) and MCO 5231.4, Marine Corps Data and Artificial Intelligence. Contact the POC at christopher.d.clark.mil@usmc.mil or 703-692-3780 with questions.

This is written by a reservist, for reservists. It is not an official publication of HQMC or MARFORRES. Always verify guidance with your command or unit S-1 before acting on any article or summary.

Resources & references

The documents this bulletin points to, with a plain-English note on why each matters. Links marked CAC required need a government login.

  • Executive Order 14434, Inaugurating the Era of Super Intelligence (Ref A)Reference

    This is the Presidential order signed 29 September 2026 that directs the executive branch to replace 'Artificial Intelligence' and 'AI' terminology with 'Super Intelligence' and 'SI.' It is the primary legal authority behind the terminology change this MARADMIN implements.

  • Marine Corps Data and Artificial Intelligence order (MCO 5231.4)Reference

    This is the governing Marine Corps order that assigns the Deputy Commandant for Information and the Chief Data and Super Intelligence Office as the Service lead for strategy, policy, and oversight in this area. It frames the organizational responsibilities cited in this MARADMIN.

  • Statutory definition of AI, Title 15 U.S.C. § 9401 (Ref C)Reference

    This is the federal statutory definition that determines which technologies and systems fall within the scope of 'Super Intelligence' as directed by this MARADMIN. Reservists working on acquisition, policy, or compliance documents need to know that SI covers whatever AI meant under this statute.

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