My Little Pony: Friendship is Magic - The Crystal War. Day 834

Here's a screenshot of the cutie map someone took during the Crystal War Timeline.

I think that's what was sort of implied by Applejack though. That, with Celestia, they were doing a good enough job against him, but it was still a war. People were still getting hurt (mostly Rainbow Dash it seemed.) and it was a drain on resources.

And I can only imagine Celestia's having her troops pull their punches a bit, since they're all innocent ponies that Sombra's controlling. (Otherwise, she could probably just glass the entire region herself.)