Apologies, slightly misleading. Very unintentional.
After a sprint from the edge of the "cut off zone" for desertion whilst looking at the Union Camp you can see the drill area in front of the flags, that I can confirm. But no, I've yet to see the target range and the bayonet practice areas. I said it is plausible to see them, but I've yet to see them. 15 minutes across the map to keep trying is not something I'd commit to. Feel free to try. It would be interesting if someone could confirm this, but without seeing any union soldiers practicing it doesn't have the same draw for me anymore.
I just like exploring the map now seeing what areas there are, what is elevated, defensively key, easy to access and so on.