Optical theory of Camouflage engineering has been invented physics is still camouflage for defence protection. This optical theory can be implemented by defence scientists to explore e invention of PhD thesis has camouflage products and multidimensional branches of optical technologies. Advancement in ultraviolet-visible-near infrared (UV-Vis-IR) theory, color engineering, camouflage engineering has been designed for defence protection. C, camouflage materials and camouflage physics has been explained throughfor camouflage textiles and camouflage materials. This technique of camouflage engineering can be explored toassessment against multidimensional combat backgrounds in UV-Vis-IR spectrums for defence technology for the design and manufacturing of combat productprotection. The concepts of UV camouflage, adaptive camouflage against multidimensional combat backgrounds such as dry leaves, green leaves, tree bark-woodland combat background; water-marine combat background; sand-desertland combat background; stone-stoneland combat background; snow-snowland combat background; sky combat background; ice-iceland combat background and concrete-concreteland combat background (DGTWSICB), and simultaneous camouflage in UV-Vis-IR spectrums are the invention of PhD thesis in camouflage engineering for defence protection. Photon theory of camouflage engineering has also been applied by imaging technology of hyperspectral camera and digital camera. This is a novel addition of camouflage technology for the engineering progress of camouflage product design. Hence, cew concept for contribution of mankind. Camouflage engineering has been briefly reported by “Anowar Hossain’s invention of camouflage physics at PhD School, first version submitted to Nobel committee for Nobel nomination in 2023 under affiliation of RMIT University”. http://dx.doi.org/10.13140/RG.2.2.29936.23048, https://doi.org/10.5281/zenodo.8286832