Just an idea, but how about if only NCO's, Officer's and Artillery observers where allowed to view an overhad map ("O" button), this way riflemen & such of whom are in his squad will have to rely even further on in-squad communication to locate objectives e.t.c. It would also be historically correct as only the above classes would posses map-cases to hold maps otherwise why not give every class binoculars (not realisitic).
Sturm
Sturm