I am still on the second page, the amount of work You've put into this is amazing!
Your writing style and grammar are much better than some native english speaking people I've met over the course of years!
But screenshots every once in a while wouldn't be much of a problem to any machine. I have just recently joined the AAR community too, and I am completely submerged into this wretched time eating sub-group of the TWC forum!
One tip I could give You tho. I will assume You are writing this text into the .txt or similar format, and pasting it into posts once they are done?
Well, the tip is: It is really hard to keep focus on the amassed lines in some of the posts, a majority of them. It wouldn't be unwise to cut the post's by ratio of 2/3...
or even by 1/2...It would let people rush through the post, and then look for more if they are eager to read on in the same charge, or leave it for tomorrow.
Whatever Your decision is, +rep from me.
And to throw a glance on the AAR of my own. It follows the young Hannibal and his early days at this moment!
Keep up the quaking work!
EDIT: as for screenshots. start a custom battle with only a few units in it. it should reduce the strain on your machine and allow You to catch nice screenies of Your own faction and the foe's!