Camouflage there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chameleons and octopuses, are capable of actively changing their skin pattern and colours, whether for camouflage or for signalling. It is possible that some plants use camouflage to evade being eaten by herbivores. Military camouflage was spurred by the increasing range and accuracy of firearms in the 19th century. In particular the replacement of the inaccurate musket with the rifle made
Military camouflage and impressionism also influenced the development of camouflage as they dealt with disrupting outlines, abstraction and colour theory. The French established a "Section de Camouflage" (Camouflage Department) at Amiens in 1915, headed by Lucien-Victor Guirand de Scévola. His "camoufleurs" included the artists Jacques Villon, André Dunoyer de Segonzac, Charles Camoin and André Mare. Camouflage schemes of the First World War and Interwar periods that employed dazzle patterns were often described as "cubist" by commentators, and Picasso claimed with typical hyperbole "Yes, it is we who made it, that is cubism". Most of the artists employed as "camoufleurs" were traditional representative