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The textbook highlights the philosophy of quantum electronics as a qualitative reincarnation of the military cryptosystem for the Protection of the Peaceful Sky of Ukraine. The theoretical and methodological aspects of the military cryptosystem for the Protection of the Peaceful Skies of Ukraine as a digital format of immortality are defined. At the same time, a human-terrestrial and human-space symbol of the indestructibility of the spirit of the Ukrainian people is provided. The main quantum key and the priority role of modern methods of electronic warfare in it are confirmed. The practical leitmotif of the world's air defence complexes to protect the peaceful skies of Ukraine is predicted.