Regulation check

THE COAST GUARD CORRESPONDENCE MANUAL reads like a Records & Information question — these are the publications that govern it in each branch:

PublicationBranchTitleDateStatus
DoDI 5045.01DoD-wideImplementation of the Correspondence and Task Management System (CATMS)2018-03-22Current
COMDTINST M5216.4CCoast GuardTHE COAST GUARD CORRESPONDENCE MANUAL2002-01-24Superseded
COMDTINST M5216.4DCoast GuardTHE COAST GUARD CORRESPONDENCE MANUAL2020-07-09Not in the current catalog
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.