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 remained simple two-colour schemes (different upper and under sides) or even dispensed with camouflage altogether. Italian and some Japanese aircraft wore sprayed-on spotted patterns. German aircraft mostly used an angular splint-pattern camouflage, but Germany experimented with different schemes, particularly in the later stages of the war. They also experimented with various spray-on camouflage patterns for tanks and other vehicles, while Allied vehicles remained largely uni-coloured. As they had volunteered in the first World War, women sewed camouflage netting, organizing formalized groups for the work in Australia, Britain, New Zealand and the United States who took part as camoufleurs during the