…Right. So, based entirely on faith, with nothing to substantiate it, and with a healthy dose of some weird Messianic complex.
Also, as another commenter pointed out, we actually have surprisingly robust data affirming that yes, indeed, the spectral albedo of grass does show peaks in the 530-550nm range correlating to M-type cone photoreceptor cells— I.E., Is green. Civil war isn’t the sort of thing you’re going to be able to pass off as self-evident.