`Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms
used by Northerners of Confederate soldiers; "the rebel yell"
take part in a rebellion; renounce a former allegiance
a person motivated by irrational enthusiasm (as for a cause); "A fanatic is one who can't change his mind and won't change the subject"--Winston Churchill
marked by excessive enthusiasm for and intense devotion to a cause or idea; "rabid isolationist"
red color or pigment; the chromatic color resembling the hue of blood
a tributary of the Mississippi River that flows eastward from Texas along the southern boundary of Oklahoma and through Louisiana
red with or characterized by blood; "waving our red weapons o'er our heads"- Shakespeare; "The Red Badge of Courage"; "the red rules of tooth and claw"- P.B.Sears
of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies