Regulation check

Information Security Program: Marking of Information reads like a Security & Law Enforcement question — these are the publications that govern it in each branch:

PublicationBranchTitleDateStatus
AR 190-13ArmyTHE ARMY PHYSICAL SECURITY PROGRAM2026-04-15Current
AFI 31-101 AFMCSUP-OAir ForceIntegrated Defense (Id)2024-03-21Current
OPNAVINST 5530.14E CH-3NavyNAVY PHYSICAL SECURITY AND LAW ENFORCEMENT PROGRAM2009-01-28Current
AR 190-14ArmyARMING AND THE USE OF FORCE2024-03-01Current
DoDD 5210.56DoD-wideArming and the Use of Force2016-11-18Current
DoDM 5200.01 Volume 2DoD-wideDoD Information Security Program: Marking of Information2012-02-24Current
DODM 5200.01V2 AFMAN 16-1404V2Air ForceInformation Security Program: Marking of Classified Information2025-06-17Current
AFMAN 16-1404 Volume 2Air ForceInformation Security Program: Marking of Information2021-01-07Not in the current catalog
DoDM 5205.07 Volume 4DoD-wideSpecial Access Program (SAP) Security Manual: Marking2013-10-10Current
OPNAVNOTE 9210.149NavyMARKING AND HANDLING OF NAVAL NUCLEAR PROPULSION INFORMATION2024-11-25Current
Looking for an actual answer, not just the pub? Ask it as a question — free, and it quotes the regulation text where indexed.
Numbers match loosely — “ar670”, “AR 670-1”, and “670-1” all find the same pub. Every result shows its live status from the official catalog.