When did the military start using camouflage uniforms?

Question

When did the military start using camouflage uniforms?

Answer 1

maybe Vietnam  

Answer 2

After Vietnam in the mid 70s is when they went to a camoflauge pattern. Until then, after the Spanish American War, they wore green uniforms with not disernable differecne or pattern to blend in with the forrest. The uniforms were designed with the intintion of fighting in Germany against the Soviet Union.

Answer 3

in 1740 the prussian army under Friedrich II. startet to wear a combination of  green, yellow and brown clothes - in 1882 russian army started wearing earth-colored coats

edit:

us army first used camouflage uniforms in 1943, after they studied captured german uniforms from the "Waffen-SS"