What does the color of the Soviet hat band mean?

Red represents the army. In many countries, the cap wall (cap edge) of the military cap is red, representing the army. Like Britain. China, Japan. But the meaning expressed is different.

Those who wear green uniforms and blue or other hats are other special arms of the army. Such as armored forces. Chemical defense forces, internal security forces. Special forces, and so on, according to the depth of blue. Most people who wear blue in general movies are armored forces or internal security forces.

Soviet uniforms, signs and so on are very complicated and fancy.