Probably both. The difficulty is that using HOTT as I intended, the rules don't cater for what are essentially mounted infantry. A house rule classing them as rider/shooters would do. Same problewm with the Gardner gun as MGs aren't covered, again a house rule classing it as a shooter will do. Performance wise I don't think the weapon was that far beyond an infantry platoon.
It could be some time before the Corps appears as they are a late addition, so far down in the queue