THe article throws light on how itelligence agencies do work, which is not really known to common man otherwise. Forward locations are equally vulnerable since they have been using ages old methods of communications but may not be of much value considering the kind of messages interchanged.
However, the armed forces making use of such communications should also be aware of perils of using these communications channels, including mobile and internet. Hacking mobile these days is also not a big ask given kind of equipments being made available in open market these days. Though the wilreless and telegrapgh act has imposed some restrictions on use of frequency use but I have seen kids using 3km wireles radios and these radios also replyed some other communications nearby and even choedless phones may also pick up some such messages.