Battlefield Illusion…
https://www.wired.com/2012/02/darpa-magic/
https://www.pri.org/stories/2012-02-16/us-military-study-battlefield-illusion-technology-confuse-enemies
https://www.scientificamerican.com/article/deploying-deception-on-the-battlefield/
https://theweek.com/articles/477993/militarys-magic-plan-make-enemies-hallucinate