In WWI, many British naval ships were painted with “Dazzle Camo”, a camouflage scheme designed not to make them hard to see, but rather to create a confusing perspective that made judging ship type, speed, and direction difficult.
British bombers bombed wooden German decoy airplanes in 1944. With wooden decoy bombs.
In Barbados it is illegal for any citizen to wear camouflage clothing.
Sharks camouflage themselves by taking advantage of water’s light-scattering properties. cleverly using light manipulations, from exposure angles, distortion and light density, essentially hiding the shark in otherwise clear water.