I had this weird thing where an Eleutheroi army went and besieged my settlement. It contained 1 unit of skirmishers, and they had 2 in the army (and nothing else). I assume this was a bug, as Eleutheroi are meant to be non-aggressive on land, right?

I suppose the armies were balanced in their favour, but I sent a general along who wiped them out.

The file is here.