a small scale map represents large areas with less detailed features such as a country or continent ma while a large scale map. represents a small area with plenty of features such as town or city...
So you can know how far things are.
Among other advantages, a large scale map make it easier to bomb the enemy.
The scale is for showing how many miles there are from one place to another.
It shows continents. countries. rivers. mountains. oceans. etc. basically everything on a normal map but it is bigger but not better.