he Roman sword is good for thrusting, though it can also cut, while the Gauls' one can only cut.' Polybius goes on to say that the Gauls' swords have no point and are made of poor material. He continues, 'They (the Gauls' swords) are effective only at the first blow, thereafter they are blunt and bend such that if the warrior has no time to wedge it against the ground and straighten it with his foot, the second blow is quite ineffective.'
This famous quote of Polybius would seem to be rather wild Roman propaganda.
Since the shorter 'Roman', sword (copied from Celts encountered earlier in Spain) was supposedly so superior to the longer Celtic sword, it seems odd that the Romans actually adopted this longer type, which they called the Spatha, originally for Cavalry and eventually for their entire armed forces, by the last few centuries of the Imperial Period in the West.
Also, the claims of inferior metalurgy of Celtic swords compared to Roman has not been borne out by modern archeology, to the contrary. Several thousand La Tene era Celtic swords have been recovered and the vast majority of those which have been tested seem to be of quite good quality for this period, being of fairly high carbon 'steely iron' often better than that of the equivalent Roman weapons. The Celts also appear to have pioneered the use of pattern welding in Europe, which the Romans may have copied,
Most incidentally had points and diamond cross sections making them eminently suitible for thrusting, though a few have also been found with spatulate, rounded, or even flat tips.
It is the Celtic sword incidentally, and it's Roman copy the Spatha, which seems to have evolved into the Migration Era Germanic (esp. Frankish) swords, the Viking Swords, and eventually the Arming Sword of Europe, and the first weapons types in the Oakeshotte Typology.
JR