Mapping enemy defenses
 

In the behind enemy lines campain the secondary objective is to map enemy defenses or positions: a tip said to map them on the mini map: how do you do that?

Wander around enough and it should update, just gotta see a ton of units and it should work. Then again, you dont even need to do that..you can just walk up the canyon and go on to part 2 haha

I killed 85% at a distance so could not really finish mapping.