The only class that can Mark enemies’ Troops reliably are the snipers (Zooming in and all).
Perhaps Binoculars should be added to the game.
For Snipers finding enemies without the scope tunnel vision.
For Radio finding and Marking enemies’ placement for artillery attacks
For maybe Anti-Tank finding enemy tanks from afar
It could also be great for the bombers and Squad.
So what do you people think of the idea?