Legionaires, from the right, number:
The fourtth has to report: Eye-eye-eye-eye! The correct Latin writing of the number four was always IIII, the IV is an invention of idle clockmakers along to the correct IX (ten less one). The use of the lesser numbers subtracted from a higher right one is an invention of modern centuries; so 1994 is not REPEAT NOT MXMIV, but MDCCCCLXXXXIIII.

Tissue dye rubbing off to the hide can be seen still today with the Tuareg, called the "Blue People", nomads in the Northern Sahara.

Fighting "naked" may mean "without protective gear", if you consider the protective cuirasses, shin protectors, helmets &c. of the average Roman heavy infantery of the line.

And now I'll look up Caesars Commentaries of the Gallian war, may last a time.

Wilfried