Found it:
"Philip's men had been accustomed to fighting with Greeks and Illyrians and had only seen wounds inflicted by javelins and arrows and in rare instances by lances. But when they saw bodies dismembered with the Spanish sword [gladius hispaniensis], arms cut off from the shoulder, heads struck off from the trunk, bowels exposed and other horrible wounds, they recognised the style of weapon and the kind of man against whom they had to fight, and a shudder of horror ran through the ranks." [Livy 31.34].
I knew I had it. I focused on Polybius, and it was Livy. For me, clearly, it is wounds caused by slashing, and not thrusting strikes.
Runequestement votre,
Kloster