Earlier quoted context omitted.
> What advantage would it provide to make it harder to distinguish individual soldiers? Distinguishing individual soldiers is an important step in counting the size of a line. Accepting "red coats blend together" as truth, that would make it more difficult for an opposing general to determine which parts of a battle line were stronger or weaker, thus making it more difficult to preposition forces to exploit weak sect…
When determining weaker sections visually, wouldn't you go by "mass" of soldiers? I don't think anybody would count individual soldiers. In any case, given the technology of the time, if you were beyond engagement range, I don't think you would have been able to pick out individual soldiers by sight regardless of which uniforms they were wearing... My theory is that vibrant color uniforms were chosen simply to make i…
Also red was just an easy colour to get hold of and to dye with, and it hid blood.
The red mass of undistinguished soldiers created an imposing sight on the battlefield. It's not about wanting to hit individuals (why would you?) it's about the shock factor.
This is only infantry as well - where shock action was even more important - cavalry - and distinction didn't apply - you had less uniform more elaborate uniforms.