 Antiochus III was able to field an extraordinary 6,000 men at Magnesia, the first testimony of cavalry gaining victory over the closed ordered ranks of a competent infantry, yet to no avail.The Seleucids also had moderate access to horse archers from their eastern borders, although they never fielded them in large numbers.The Ptolemies also deployed heavy armored lancers, never cataphracts, probably because of the high temperatures prevalent in their empire.