First, I stand in awe at your moves around Moscow in the earlier posts. You're dancing around the Reds, keeping them guessing (and dealing quite a lot of damage in the process).
Second: those are MASSIVE Red armies facing you at Kursk. Seems like you got lucky that the Red cavalry decided on its death ride. Otherwise, if it had been a straight-up infantry fight, I imagine things would have been even more costly for you - if it wouldn't even have lead to a loss for the White cause.
At least, for now, you still have the link between your forces near Moscow and the south. Here's hoping you'll be able to fend off the next attack as well.