Active camouflage or adaptive camouflage is camouflage that adapts, often rapidly, to the surroundings of an object such as an animal or military vehicle. In theory, active camouflage could provide perfect concealment from visual detection.
Active camouflage is used in several groups of animals, including reptiles on land, and cephalopod molluscs and flatfish in the sea. Animals achieve active camouflage both by color change and (among marine animals) by counterillumination.
In military usage, active camouflage remains at the research stage. Counterillumination camouflage was first investigated during the Second World War for marine use. Current research aims to achieve crypsis by using cameras to sense the visible background, and by controlling panels or coatings that can vary their appearance.
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“Communists have always played an active role in the fight by colonial countries for their freedom, because the short- term objects of Communism would always correspond with the long-term objects of freedom movements.”
—Nelson Mandela (b. 1918)