Thanks, quite a good summary of an increasingly wonky story.
The more I think about that battle, and their plan, the more glaring problems emerge. Like putting your entire forces out in the open, when facing an enemy who has vastly superior numbers. And then putting all your obstacles and defences BEHIND your forces, so they get crushed between the charging enemy and your own obstacles - it's plain madness!
But I suppose it's just a story, and we should enjoy it for what it is.
But it's no accident that people often compare GOT to Lord of the Rings, which was also a very complex intriguing story written on a massive scale, with a huge detailed history backing it up.
Only LOTR, when turned into movies, didn't make a complete hash of that sort of thing. Not sure why the producers of GOT did not follow a great example.
But anyway...