If two countries go to war, how can the opposing army know which army is theirs without accidently shooting their own teammates?

Question

Does every army in every country have a different uniform? Or do they all wear camouflaged suits or something.

In: 729

Answer 1

Most oftenly countries use diffrent camos

In a situation like Ukraine where both sides like to use the same one,sides had started putting colorfull tapes around their uniforms to signal who are they fighting for.