This is an alternate universe series wherein there really WERE Witches around in the Colonies before the founding of America and in return for an end to the Salem Witch Trials they were use their powers to defend the community. When the Revolution began they were part of the Armed Forces and were granted an Accord wherein they would continue to service the new USA.
The first witch who cooked up the Accord? Now a General in the Armed Forces and still alive after all the centuries to continue training new recruits at their fortress.
I watched the first two episodes, and while I was expecting it to be a generic teen show....I was surprised at it. The character conflict is nice, the subtle changes to the world are shown without delving too deep and I'm going to keep watching. Plus being a Canuck I'm always happy when another Canuck gets a leading role in anything!