Huge amount of work to create any kind of map. Data hunting is a super hard part. Not only do you need aircraft charts, you need elevation maps that are accurate and detailed, river data, lake data, road and rail data, forest areas, etc. The hardest to find is good satellite imagery for the textures. Sure your free Landsat 7 textures can look ok far out. But when your right over the ground, they can make your eyes vomit. Not to mention putting it all together...
Much more efficient to just create some afghan village models and place them in the targeting range. That's what the airforce does for training