Ok I found this guy an has 11million kills but way more might in destroyed enemy might i then did the math on a calculator and I did not match up at all
This is an accumulated number from when he first started playing. Not every soldier he killed would have been the same might, he would have everything from T1-T4 troops killed.
So, You can't multiply his kills by a set number.
It probably includes destroying other types of might than just soldiers, like traps, walls, etc.
I couldn't find anything online regarding this number, but if it only included troop kills, the number would be much lower, because he would not have only been killing T4 troops.
It's the number of kills and the total enemy might destroyed.
When joining a rally, your kills are calculated as (Total Number of Enemy Casualties)*(% of Allied Troops that are Yours),
i.e. if there are 11 people in a rally (Leader sending 375k and fillers sending 200k each for 2,375,000 troops total), and you as a whole kill or wound 1,000,000 enemy troops:
Assuming you are a filler, your % of Allied troops is (200,000/2,375,000)=~8.42%
Total inflicted casualties is 1,000,000
Your kills are therefore ~8.42% of 1,000,000, or 84,200.
All enemy might destroyed in a battle is counted towards each individual's total might destroyed. Continuing with above as an example, if all enemy casualties are pure T4, one would assume our might destroyed to increase by (36*84,200)=3,031,000
This is not the case.
In reality, your might destroyed will increase by (36*1,000,000)=36,000,000.
This is the number shown on the battle screen under casualties.
Another way to think about it is simply Might Destroyed = (Avg. Might of Enemy Casualty) * (Total Enemy Casualties).
The higher the might destroyed, the more rallies that user joins/eats.