In practice, this means applying colour and materials to military equipment of all kinds, including vehicles, ships, aircraft, gun positions and battledress, either to conceal it from observation (crypsis), or to make it appear as something else (mimicry).
The French slang word camouflage came into common English usage during World War I when the concept of visual deception developed into an essential part of modern military tactics.
In that war, long-range artillery and observation from the air combined to expand the field of fire, and camouflage was widely used to decrease the danger of being targeted or enable surprise.
With the advent of longer range and more accurate weapons, especially the repeating rifle, camouflage was adopted for the uniforms of all armies, spreading to most forms of military equipment including ships and aircraft.
However, unlike an animal or a civilian hunter, military units may need to cross several terrain types like woodland, farmland and built up areas in a single day.
[6] While civilian hunting clothing may have almost photo-realistic depictions of tree bark or leaves (indeed, some such patterns are based on photographs),[13] military camouflage is designed to work in a range of environments.
A dramatic change in colour and texture is created by seasonal snowy conditions in northern latitudes, necessitating repainting of vehicles and separate snow oversuits.
[17] The German Army developed the idea further in the 1970s into Flecktarn, which combines smaller shapes with dithering; this softens the edges of the large scale pattern, making the underlying objects harder to discern.
Vegetius wrote in the 4th century that "Venetian blue" (bluish-green, like the sea) was used for camouflage in the years 56–54 BC during the Gallic Wars, when Julius Caesar sent his scout ships to gather intelligence along the coast of Britain.
[52] The example was followed by other British units during the mutiny of 1857, dying their white drill uniforms to inconspicuous tones with mud, tea, coffee or coloured inks.
[53] While long range rifles became the standard weapon in the 1830s, armies were slow to adapt their tactics and uniforms, perhaps as a result of mainly fighting colonial wars against less well armed opponents.
Not until the First Boer War of 1880/81 did a major European power meet an opponent well equipped with and well versed in the use of modern long range repeating firearms, forcing an immediate change in tactics and uniforms.[why?
[69][70] 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".
[73] Norman Wilkinson who first proposed dazzle camouflage to the British military employed 5 male designers and 11 women artists, who by the end of the war had painted more than 2,300 vessels.
[74] French women were employed behind the lines of both the British and American armies, sewing netting to disguise equipment and designing apparel for soldiers to wear.
[75][76] Printed camouflage for shelter halves was introduced for the Italian and German armies in the interwar period, the "splotchy" M1929 Telo mimetico in Italy and the angular Splittermuster 31 in Germany.
[90] Operations combined the disguise of actual installations, vehicles and stores with the simultaneous display of dummies, whether to draw fire or to give a false idea of the strength of forces or likely attack directions.
[90] In Operation Bertram for the decisive battle at El Alamein, a whole dummy armoured division was constructed, while real tanks were disguised as soft-skinned transport using "Sunshield" covers.
[90][91] The capabilities so developed were put to use not only in the western desert, but also in Europe as in the Operation Bodyguard deception for the Invasion of Normandy,[90] and in the Pacific campaign, as in the Battle of Goodenough Island.
[6] Being able to find appropriate camouflage vegetation or in other ways modify the issued battle uniform to suit the local terrain is an important skill for infantry soldiers.
Heavier, more durable "mobile camouflage systems", essentially conformal duvets with thermal and radar properties, provide a degree of concealment without the delay caused by having to spread nets around a vehicle.
Paint schemes were selected on the basis of ease of maintenance or aesthetics, typically buff upperworks (with polished brass fittings) and white or black hulls.
Around the start of the 20th century, the increasing range of naval engagements, as demonstrated by the Battle of Tsushima, prompted the introduction of the first camouflage, in the form of some solid shade of gray overall, in the hope that ships would fade into the mist.
[111] In the Second World War, the Royal Canadian Navy trialled a form of active camouflage, counter-illumination, using diffused lighting to prevent ships from appearing as dark shapes against a brighter sky during the night.
[115] The higher speeds of modern aircraft, and the reliance on radar and missiles in air combat have reduced the value of visual camouflage, while increasing the value of electronic "stealth" measures.
Modern paint is designed to absorb electromagnetic radiation used by radar, reducing the signature of the aircraft, and to limit the emission of infrared light used by heat seeking missiles to detect their target.
[117][118] The Illustrated London News announced The scheme of decoration for the great fancy dress ball given by the Chelsea Arts Club at the Albert Hall, the other day, was based on the principles of 'Dazzle', the method of 'camouflage' used during the war in the painting of ships ...
Early designers include Marimekko (1960s), Jean-Charles de Castelbajac (1975–), Stephen Sprouse (using Warhol prints, 1987–1988), and Franco Moschino (1986), but it was not until the 1990s that camouflage became a significant and widespread facet of dress from streetwear to high-fashion labels – especially the use of "faux-camouflage".
Producers using camouflage in the 1990s and beyond include: John Galliano for Christian Dior,[126] Marc Jacobs for Louis Vuitton, Comme des Garçons, Chanel, Tommy Hilfiger, Dolce & Gabbana, Issey Miyake, Armani, Yves Saint-Laurent.
[127][128] Some countries such as Barbados, Aruba, and other Caribbean nations have laws prohibiting camouflage clothing from being worn by non-military personnel, including tourists and children.