Uniforms of most of the world was green (grass green, dark-green or yellow-green). Uniform invariably toward green development, summed up the lessons from actual combat.
The end of 19th century British imperialists launched against South Africa of wars of aggression. At that time, South Africa has one called "Boolean" white people, they refused his homeland ravaged by foreign invaders, organized armed resistance. Less strength of the Boer War, British soldiers, and correlation of forces on both sides of 1:5. The Boers lost early in the war. British army full of potential and strong, dominating the way forward. Boolean people through a period of observation, found that British forces have a great feature, wore red uniforms, in South Africa in a forest green background, stands out, so action is easily exposed, the Boers are inspired from here immediately to green their own clothing, guns are painted green. In this way, the Boers will use grass green background of the jungle for cover, British troops are not easy to find the Boers, Boer is easy to find the British army, British army as close they often go unnoticed, suddenly attacked, beat the British army by surprise, the British army but can not find the target. The war, British forces killed and wounded more than 90,000 people, suffered heavy losses.
"His front, after the commandments", the British in South Africa by the lessons, and soon were gained by the armies of many countries. Under field conditions in order to better cover the army's action, first proceed from the clothing, the continuous improvement of uniform color, close to nature of the background as much as possible. In this way, army clothing varies widely in the world, but gradually in the green in color tone together.
Of course, everything is not absolute. From the perspective of concealment camouflage, uniforms colors cannot be confined to green. In many cases, the natural background is not green, this required according to local conditions and flexibility in selecting clothing colors. In the snow, only white can be consistent with background; on the sea, can be integrated with the only blue; in the desert, only Brown and is close to the background.