Description
As centuries passed, naval tactics and needs changed across the Mediterranean. There was a move towards larger ships, partly as an expression of national or dynastic power: the Ptolemaic rulers of Egypt were particularly fond of large ships to show their wealth and influence in a physical way. These 'polyremes', a term meaning many oared, were not suitable for ramming work in battle. In practice many of them had no more oars than smaller ships; what they had were more rowers per oar than smaller ships. A Roman hexareme or Greek hexeres would have a couple of banks of oars with three men per oar, and appear to be an over-sized version of a smaller ship. Even so, thanks to being tremendously heavy and strongly constructed, they were slow moving, and hardly capable of the quick turns needed to take advantage of enemy mistakes. Instead the large ships made use of their wide decks and plentiful carrying capacities and became fighting platforms for infantry and artillery. Boarding or long-range bombardment were the methods to be used to defeat the enemy; naval warfare had come full circle in terms of fighting methods, even if ships had grown significantly.
The thureos, a large oval-shaped shield, became common throughout the Hellenistic world from the 3rd century BC. Made from wood covered in hide, it differed from the earlier Greek hoplon in having a central handgrip, which was protected by a vertical spine running the length of the shield. This in turn could be further reinforced by the addition of a wide metal strip that protected the grip and the user’s hand. Inspired by the sub-rectangular and oval shields of the Celts, possibly through contact with the migrating Galatians, its usage seems to have spread through the Illyrian and Thracian tribes before it was adopted by the Greeks. Although large, the thureos was light in comparison to the traditional hoplon, and was adopted by heavily-armoured peltasts. Named after their shields, 'thureophoroi' could fight as common peltasts, skirmishing with javelins, but could also form up with their larger shields and longer spears in a similar fashion to a phalanx. The versatile and useful design of the thureos meant it was used by many armies, including the auxiliaries and cavalry of the later Roman Legions.
