Sidnell argues that the record shows that Roman cavalry in Republican times were a strong force in which they bested higher reputed cavalry of the time. Examples include the Heraclea (280 BC), in where the Roman cavalry dismayed the enemy leader Pyrrhus by gaining the advantage in a bitterly contested melee against his Thessalian cavalry, then regarded as some of the finest in the Western world, and were only driven back when Pyrrhus deployed his elephants, which panicked the Roman horses. Other examples include the Equites' victory over the vaunted Gallic horse at Telamon, and Sentinum, against the Germanic cavalry of the Teutons and Cimbri at Vercellae, and even against the technologically more advanced Seleucid cavalry (including fully armored cataphracts) at Magnesia. Contrary to the popular depiction that the legionary infantry were the primary battle winning force of the Roman army, these encounters were primary decided by the success of the Roman cavalry, who crushed the enemies' mounted forces before falling on the flanks of their infantry. At the Clastidium the Roman cavalry were even able to triumph unaided against superior numbers of Gallic foot soldiers and horsemen, showing their ability when properly led.