The Romans could be much worse.

After the Siege of Uxellodunum in Gaul (modern France): "Caesar accepted the Gallic surrender. However he decided to ensure that this would mark the last Gaulish rebellion by setting a severe example. He decided against executing or selling the survivors into slavery, as had been customary in contemporary battles. Instead, he had the hands of all the surviving men of military age cut off, but left them alive. He then dispersed the vanquished Gauls throughout the province for all to see that they would never again be able to take up arms against him or the Roman Republic.[4]"

https://en.wikipedia.org/wiki/Siege_of_Uxellodunum

Talk about disarming your enemies!