GenAI Field Guide
Classified Nothing on GenAI.mil CUI GenAI.mil IL5 · follow your organization’srules Public / unrestricted Consumer apps only where permitted; noofficial work Permission is not correctness IL5 concerns what a system may process
What may go where. IL5 answers "may this system legally process this class of information?" It never answers "is this paragraph right?"

The rule card

Information GenAI.mil (IL5) Consumer apps (personal accounts)
Classified, any level Never. Wrong impact level. Full stop. Never.
CUI Yes, within your command's guidance. Never.
PII Per your command's privacy policy. Never for official work.
Public / unrestricted (open-source references, general how-to questions) Yes. Only if your command permits it, and never for official work products.