Ok, this is my 5cents.
Feedback is very important. Readers are less likely to co-operate a read everything if they are not being heard or, if they have asked a question which many do, answered so they can understand things better. Of course, ones that say 'Great Update' and the like don't and can't really be answered to (i still say thanks though), but a full comment should be answered. Feedback was very poor throughout this until the very end.
Another little thing that bugged me was the word 'simulation' at the start of every screenshot. I know that this really is a little thing, but those kind of things do annoy me so you don't really need to listen to this. That word it just... it isn't nessercary.
You did very well with the gamepaly apart from one point. The modding you did to this to make you continue to own America just made you too powerful. But even if you didn't have this, the UK is still one of the most powerful nations out there. Dr. Gonzo's AAR is a lot more politically driven, but he has kept away from just conquering everything. He could if he wanted i'm sure, but he didn't. You must just make the fine line between what is becoming a world conquest where nobody can stop you (your invasion of Germany for example) and a game which is farily balanced and where you give a role-playing reason why or why not you invaded this place: crucial in History-Book. Overall you did this ok, but some points were a little over the top.
As for what asd said, he has got his AAR nearing on perfect in those respect. Centering pictures and titles makes updates look much neater and in-line. As for mood music, i don't use it in either of my AARs, but if someone could prove the benefits of it i would duly use it. However, if you think it is fitting, then fire away. Just make sure you chose the right music.
Now i am not usually very critical openly about anything. However, since you asked for it, i was brutally honest.
Hope this helps
Rob