There was Harry Harrison's rather cheeky trilogy !Tell me about it with the George Sharpe stuff. It got so incredibly annoying in that series how omniscient he was. It was the typical trope of making your enemies idiots and the guys you want to win amazingly intelligent in order to get the desired result.
I have some fears that this series might end up going in that direction because imo the Union is doing a little too well. My study of a possible Trent War sees it as virtually impossible for the Union to win this war. They simply cannot fight both the English (who are pretty much at the height of their historical power) and the Confederates.
If they're lucky they can escape the war without losing too much (basically just the 11 Confederate states) but the south's independence is all but assured imo.
It would take an immense amount of good fortune (on a Tsouras level) for the Union to definitively win this war.