Indeed, the 'Romanized' troops are seen facing the Maccabees at the Battle of Beth Zechariah in 162 BC.
Training troops in this way would add to the overall efficiency and capability of the army and make it more manoeuvrable. Secondly, the future wars that the Seleucids might be fighting would probably be in the eastern satrapies against mobile enemies and other large areas of land. Firstly, Antiochus IV had 'spent part of his early life in Rome and had acquired rather an excessive admiration for Rome's power and methods". The training of a segment of the royal guard in "Roman' methods was probably down to several factors. It is possible that the missing 5,000 men of the Argyraspides were the 5,000 'Romanized' infantry marching alongside them. However, 5,000 troops armed in the Roman fashion are present and they are described as being in the prime of their life, perhaps denoting their elite nature. In 166 BC, at the Daphne Parade under Antiochus IV, the Argyraspides corps is only seen to be 5,000 strong. The whole kingdom may mean 'regions like Syria and Mesopotamia, which were the nucleus of the Seleucid Kingdom, there was a greater density of Greek soldiers'. The Argyraspides were probably a corps of about 10,000 men who were picked from the entire kingdom to serve in this unit. They were armed in the Macedonian manner with a sarissa and fought in the phalanx formation, much like the other Hellenistic armies of the time. They were a permanently embodied guard unit, which was formed from the sons of military settlers. The principle guard infantry of the Seleucid army was the 'Silver-Shields', or Argyraspides. In his reign, Antiochus IV had built 15 new cities "and their association with the increased phalanx. This was most likely due to the army reform that was undertaken by Antiochus IV. At the Daphne Parade, it was largely trusted Greek soldiers capable of being deployed anywhere on display, rather than "ethnic" contingents. One of the most detailed reports of Seleucid manpower is from the historian Polybius, who recorded in detail units in a military parade in 166–165 BC at Daphne, near its capital Antioch. The government was leery of training and trusting non-Greek soldiers "too much" though, for fear of revolts against Greek rule. The rest of the Seleucid army would consist of a large number of native and mercenary troops, who would serve as light auxiliary troops. These Greek settlers would be used to form the Seleucid phalanx and cavalry units, with picked men put into the kingdom's guards regiments. For example, Antiochus III brought Greeks from Euboea, Crete and Aetolia and settled them in Antioch. The Greeks were dominant in Lydia, Phrygia and Syria. The majority of settlements were concentrated in Lydia, northern Syria, the upper Euphrates and Media. The settlers would maintain the land as their own and in return they would serve in the Seleucid army when called. Unlike the Ptolemaic military settlers, who were known as Kleruchoi, the Seleucid settlers were called Katoikoi. They were settled in 'colonies of an urban character, which at some point could acquire the status of a polis". The military settlers were given land, "varying in size according to rank and arm of service'. There were two main periods in the establishment of settlements, firstly under Seleucus I Nicator and Antiochus I Soter and then under Antiochus IV Epiphanes. In order to increase the population of Greeks in their kingdom, the Seleucid rulers created military settlements. The distance from Greece put a strain on the Seleucid military system, as it was primarily based around the recruitment of Greeks as the key segment of the army. 3.7 Allied, vassal and mercenary cavalry.2.5 Allied, vassal and mercenary infantry.