Changing the Term Military Information Support Operations Back to Psychological Operations

This Department of War memorandum announces the formal return to the term Psychological Operations (PSYOP), replacing Military Information Support Operations (MISO) effective immediately. It explains that the change is intended to reduce confusion, better align function with identity, and reinforce deterrence and warrior ethos priorities. The document also outlines implementation guidance, including updates to existing DoD instructions and timelines through the end of fiscal year 2026. Together, it provides insight into how terminology, doctrine, and strategic communication intersect in modern military operations.