Battle of Gaugamela main Persian infantry was poorly trained and equipped in comparison to Alexander's pezhetairoi and hoplites. The only respectable infantry Darius had were his 2,000 Greek hoplites and his personal bodyguard, the 10,000 Immortals. The Greek mercenaries fought in a phalanx, armed not with a heavy shield but with spears no longer than three metres, while the spears of the Immortals were two metres long. Among the other Persian troops, the most heavily armed were the Armenians, who were armed the Greek way and probably fought as a phalanx. The rest of Darius' contingents were much more lightly armed; the main
Thracian clothing Thracian clothing Thracian clothing refers to types of clothing worn mainly by Thracians, Dacians but also by some Greeks. Its best literal descriptions are given by Herodotus and Xenophon in his Anabasis. Depictions are found in a great number of Greek vases and there are a few Persian representations as well. In contrast to shapes and patterns we have very little evidence on the colours used. The Thracians wore a tunic, a cloak called "zeira" (Ancient Greek: ζείρα), a cap called "alopekis" (Ancient Greek: Αλωπεκίς) made from the scalp of a fox with the ears visible, other Phrygian cap styles,