Slitherine

At around the 10th or so turn, one of my units talks about leading a unit to the Stone Circle (or something of that nature) to get reinforcements.

Thing is, there's no place labeled on the map.

I don't know if this is a bug or by intended design, but I think that location should be labeled on the map during the mission so I know where to try getting to.

small circle in the bottom left of the map, so as your looking at the fort, just go left and it right in the corner

It should be labeled, imo.

Other meaningless locations have labels, important ones crucial to the flow of the mission should be labeled.