Thanks for fighting the good fight in the USA's contribution to WWI. Too bad the Europeans are so stupidly nationalist. They're genuinely deluded and like to cling to the moments when they believe they were still relevant. And on the whole? European nationalism is weird. It's this weird not straightforward nationalism that works by claiming they're not nationalists but everyone else is.
This would've been in the Fanfic Recommendations thread in Media and Fandom. The books themselves aren't much like game of thrones except in the sense of "bullshit politics causes a lot of drama" and "dark fantasy" being core elements.