Something out of a Dale Brown book starting with Tin Man (sort of sequel to STORMING HEAVEN ) then a couple of other books where all personnel of the High Advanced Weapons Centre -HAWC and Dreamland were surgically installed with a little biochip that acted as a communicator as in even if they were without mobile phones or communciations, trapped, imprisoned in the middle of nowhere they could shout literally into the air for help or be communicated to from hq.
This also reminded me of the concluding chapter of Airland Battle 2000 by Christy Campbell written in the mid to late 80s. Whereby it was said that a UK company was researching a Soldier 2000 equipped with a lightweight kevlar all in one suit with added NBC protection, armoured helmet and visor with eyes up display and lightweight bergen / backpack with twin vertical launch anti armour missiles and an advanced automated rifle with laser and night vision.