Hi!
The latest issue of WS&S contains an interesting scenario for
Sharp Practice, and although this is for the Carlist Wars, it could easily be converted to the ACW. But it does need a fort!
So I set myself the task of building a fortified blockhouse from scratch. Fortunately, that's not too complicated. This is what I came up with:

For a detailed tutorial see here:
https://wargamingraft.wordpress.com/2016/08/21/building-an-acw-blockhouse/I have to say that I'm somewhat proud of my trick for assembling the roof...

Cheers,
Shandy