In some other mud and blood games they put german spies in there yup but along time it was my first game that has spies on it. And i thought that my soldiers are speaking germa and i lost the game alot of times.But it's still the best game ever!
It's cool that the battlefield has trees and you can hide your soldiers in the trees. Sometimes when the enemie shoots your soldier get shot from hiding trees, it getsalot of damage.
If i finish alot of defence in Campaign i would unlock better cannons squads machine gun turrets,and bunkers. If you unlock more things like that it might get powerful even you incease defences.