Stacking bonus

So in all the explanation about the battle mechanics, I don't see anything about an additional bonus for large stacks - its been raised before, but the answer is always the FAQ - how units battle one at a time and thats it, and that its just variation beyond that. But my experience over and over again is that you get an advantage attacking with bigger numbers (above and beyond the fact you have more troops before anyone says that).

i.e. if i hit, and im pulling these numbers out of thin air so they might not be accurate, 50 bombers on 60 inf and take them all with 1 bomber left, but if use 150 bombers, i might lose 30 instead of 49. it might not be that drastic, but its definitely my experience.

the last one i remember - dont ask me why i was doing this but i was attacking a load, over 200 of inf ( not pd) with general in city with sm stealths, over 30, they obv all die, and like 17 inf die. and i knew that would happen, where as if i hit 35 inf with general on their own they would (could) be all gone.

its the same over and over, not just a bad arb or whatever. have i missed the fact this is common knowledge? or what?

The one issue I have is that I don't think the general actually has any affect on the attack/defense stats of units when I buy those upgrades. I've done the math and it seems that it never changes when the general is added into the equation.

I think its hp, 2 miltia even though weaker than a tank attk wise, will have more +7 hp in reality. Idk Im just guessing.

Well unit attacks are based on rolls. with larger amounts they are more chances to get a variation of high or low rolls. Also, with more units equals more ARB so that can affect it as well.

Just to clarify, lets say your SM bombers are 8 attack, meaning they will roll anywhere between 1-8 as their attack. (Which means 4 and 5 are average for a bomber.)

Also, ARB, more units equals more chance of getting the final bonuses.