Great work mate. It's obvious you've put a lot of time and effort into making this so thumbs up to you. After reading it through a couple of times there's a couple of problems (which is actually way less than I expected from a supplement this detailed).
1) This has already been mentioned, on page 9 "Forfeiting the Game" ends mid-sentence. I think that might have something to do with the large picture underneath?
2) The Wargear Cost table is (at least for me) a bit hard to understand. The cost is quoted at, for example, 1/5 for a spear etc. My understanding is that the first value (1) is for a hero with Wounds + Attacks < 3 and the second (5) is for heroes with Wounds + Attacks >= 3. If this is right a key would be helpful in the table above points values eg: A+W<3 / A+W>=3. If this understanding is completely wrong then more clarity is needed.
3) "Additionally, the smaller Company receives one extra Gold for every full 15 points
of difference in ratings after the game." Does this mean the battle company rating after the game or they get gold after the game for the difference in ratings before the game?
4) "In addition, a Battle Company that possesses a Company
Standard gains +1 Gold for each victory. However, a Company
with a Standard that is defeated grants +1 Gold to its opponent." - So the losing Company gives one of their gold to the victors or the victors just get an extra gold?
5) With regards to Concealing Cloaks, I don't think it's logical to lose the effect after shooting but that's just a personal opinion. I also don't think it's logical to end the effects of the cloak but if you've included that rule to prevent a heavily cloaked Company from being OP then fair enough.
6) Does a model with a Scourge get to use the Whorl special strike?
7) As Scouts do not count towards a companies Roster Limit do they also not count towards the bow limit?
With the Special Rules, do these have to be gained by rolling a 5 on the hero advancement table?
I hope you appreciate that most of these points are not mistakes but small points where clarification is needed. I'm not criticising your work, in fact I think it's excellent, I just think that these things will end up being FAQs and due to your advantage of producing an online resource they can be quickly modified to prevent confusion. Again, really great resource and I hope to be playing a Battle Companies game ASAP.