It was a case of Friendly Fire. A Legion returning to its base after recent Barb battles came upon a Warrior group on the road ahead in the dark. A skirmish broke out and when the brief battle fought in the dark was over...the dead were found to be neighboring Macedonians and NOT Barbs.
Rome regrets this incident and has sent an emissary to them carrying the official apology, the remains in linen burial garb, and compensation to the Macedonian goverment.
Hopefully future improvements like street lights will help prevent these type of mistakes!
Oh of minor note...Rome enters into its Golden Age....GPS