Overload

What does overload do for your army? Does it have to do with carrying resources or is break cranny the only thing to do with that?

Yes: the overload number is the exact number of resources 1 of that kind of troop can steal from an enemy city or a fort after a victory. For example, 1 infantry has 80 overload, thus it can take 20 of each resource. (4 resource types, 80 / 4 = 20). So if you plan to steal all 50,000 of each resource from a level 1 fort, make sure you have 200,000 overload in total of the troops you are sending. With the number of catapults required for a level 1, about 2,000 infantry should do the job. Simple calculations of overload can tell you the number of troops you need to take a certain number of resources for any city or fort you may wish to farm. :)