Camouflage camouflage in combat uniforms is necessary to hide oneself and destroy the enemy. This was gradually developed by constantly summing up experience in the war. The ancient military uniforms were brightly colored, making it easy to distinguish between the enemy and ourselves. There was no uniform color requirement in the earliest military uniforms. For example, in the Middle Ages in Western Europe, a private army belonging to the nobility appeared-knight cavalry. They bring their own clothes, there is no uniform, and the colors of the clothes are also varied. In combat, it is often difficult to distinguish between the enemy and ourselves, and they often injure their own people by mistake, which is not conducive to combat. /kloc-in the 0 th and 5 th centuries, mercenaries and military uniforms appeared in western Europe. During the period of Louis XIV, France formally stipulated uniform uniforms, and the uniforms of different arms were different in color: the guards wore white uniforms, the dragoons wore red uniforms, and the infantry wore gray uniforms. At the same time, the ornaments on various military uniforms are gorgeous and eye-catching. Someone in the Song Dynasty in China pointed out: "The ancients were obedient and consistent, and they were all red." It is said that all officers and men in the army wear crimson clothes. "Wearing crimson clothes, the upper and lower are uniform" has four meanings: First, the military capacity is strict; Second, it is conducive to identifying the enemy and ourselves on the battlefield to avoid accidental injury; Third, it can protect officers on the battlefield from becoming "targets of public criticism"; Fourth, most importantly, using red as a military uniform can be consistent with the colors of military artifacts such as black and red wheels and war drums coated with animal blood. Once soldiers are injured and bleed, they will not be found, which can avoid their fear of war. The clever Boers changed the color of their uniforms to win the battle. /kloc-At the end of 0/9, British imperialism launched the An Ying-Burundi War in South Africa. The number of Boer soldiers is small, which is 1/5 of the British army. In the early days of the war, the Boers suffered heavy casualties. The clever Boers summed up the lessons of war failure in time and carefully observed the situation of the British army. They discovered a fatal weakness of the British army. That is, the British troops are all dressed in big red uniforms, which are particularly bright against the green background of the prairies and forests in South Africa, so their actions are easy to expose. Inspired by this, the Boers immediately painted their uniforms and guns grass green, blending with the green of the jungle. In this way, the British are in the Ming and the Boers are in the dark. The Boers can easily find the British, but the British can't find the Boers. At the same time, the British army is still arrogant and aggressive. So the Boers often approached the British army unnoticed, and when they were unprepared, they suddenly launched an attack, which made the British army dizzy and unprepared. The Boers hid after the fight, but the British couldn't find the target to fight back. In this war, the British army killed or injured more than 90 thousand people. The complicated combat environment forced soldiers to start wearing strange clothes. In the First World War, the armies of various countries did not have special combat uniforms, but generally fought in military uniforms, so the colors of military uniforms were gradually unified into green tones. Among the green tones, there are dark green, grass green, dark green and olive green. Under the circumstances at that time, the green tone was more suitable for activities and operations in jungle, grassland and farmland areas. Of course, from the hidden point of view, the color of military uniforms must not be limited to green. Such as deserts, bald mountains, hills, wasteland, etc. The background is not green. Therefore, all countries in the world choose the color of military uniforms flexibly and reasonably according to the local natural environmental conditions. Therefore, in the military uniforms of various countries, there are khaki, brown, cyan and so on, because these colors are close to the colors of land, desert and rock; In the snow, you can use white camouflage clothes to coordinate with the environment; On the ocean, you can blend in with the ocean by wearing a blue and white sea soul shirt. In the Second World War, the combat environment became more complicated, and a single color was easily found by the enemy, so colorful clothing composed of multi-color deformation blocks appeared. This kind of flowered clothes is more suitable for hiding in Shan Ye and grasslands of various colors. In appearance, it is similar to modern camouflage clothes. At that time, expeditionary forces from Europe and America 10 countries all used combat uniforms made of 6-color camouflage in actual combat. However, the camouflage flowered clothes at that time were by no means camouflage clothes today, because they can only confuse and deal with the naked eye, that is, visual observation. With the development of science and technology, people invented a kind of reconnaissance equipment-infrared detector. Through observation, we can find soldiers of all colors, including soldiers in green, soldiers dressed in yellow like land and rocks, and soldiers dressed in white in the snow. The principle is that the infrared light waves reflected by these soldiers' clothes are different from those reflected by the environmental background. Therefore, soldiers hidden in the natural background and hard to see with naked eyes can be clearly found by infrared detectors. In order to cope with the detection of infrared detectors, people mixed some special chemicals into the multi-dispersion spots. Through continuous research, the infrared light reflected by these colors is consistent with the infrared light reflected by the environmental background, and the reflection ability of speckle is close to the natural environmental background. In this way, modern camouflage training clothes can be seen not only by visual observation, but also by infrared detectors. With the development of modern reconnaissance technology and new material technology, camouflage training clothes have made new progress. In recent years, scientific research institutions in developed countries have developed special dyes and camouflage colors that can deal with visible light and near-infrared reconnaissance technology. At the same time, inspired by the chameleon's ability to automatically change color to protect itself, people invented a kind of cloth treated with photochromic substances, dyed it on ordinary fabrics with photochromic dyes, and then made a chameleon camouflage suit with better camouflage effect from the above cloth and fabrics. This "chameleon" camouflage suit can automatically change color with the change of light color in the surrounding environment, so that the wearer will not expose himself in any environment. The lines and colors of camouflage clothes are close to green, while some areas such as forests and grasslands are mainly green, which has a good hiding effect, and that's all.