Yet their gallantry enabled the Gauls to do good work with these bad tools. F. Camillus, the dictator,[953] seeing that his enemy cut mostly at head and shoulders, made his Romans wear light helmets, whereby the Machairæ-blades were bent, blunted, or broken. Also, the Roman shield being of wood, he ‘directed it for the same reason to be bordered with a thin plate of brass’ (copper, bronze?). He also taught his men to handle long pikes, which they could thrust under the enemy’s weapons. Dionysius Halicarnassus introduces him saying, while he compares Roman and Gaulish arms, that these Kelts assail the foe only with long lances and large knives (μάχαιρας κοπίδες)[954] of sabre shape (?). This was shortly before his defeating and destroying Brennus and the Senonian[955] Gauls, who had worsted the Romans (B.C. 390) on the fatal _dies Alliensis_,[956] and who had captured all the capital save the Capitol. The Gauls of Cæsar’s day[957] had large iron mines which they worked by tunnelling; their ship-bolts were of the same material, and they made even chain-cables of iron. They had by no means, however, abandoned the use of bronze arms. Pausanias[958] also speaks of ταῖς μαχαίραις τῶν Γαλατῶν. Diodorus[959] notes that the Kelts wore ‘instead of short straight Swords (ξίφους), long broad blades (μάκρας σπάθας[960]), which they bore obliquely at the right side hung by iron and copper chains.... Their Swords are not smaller than the Saunions (σαυνίων[961]) of other nations, and the points of their Saunions are bigger than those of their Swords.’ Strabo[962] also makes the Gauls wear their long Swords hanging to the right. Procopius,[963] on the other hand, notices that the Gallic auxiliaries of Rome wore the Sword on the left.[964] According to Poseidonius,[965] the Gauls also carried a dagger which served the purpose of a knife, and this may have caused some confusion in the descriptions.