In an absurdly sci-fi development, researchers at the University of Washington have managed – in very limited fashion, with somewhat modest results – to send a brain signal from one person to another, using the internet to convey the sender’s thoughts.
While it is obviously early days with this technology – a 25%-83% accuracy rate is hardly conclusive per se – this is still very exciting, because it suggests that the realm of telepathy (albeit internet-delivered telepathy) may not be quite so far-fetched. That having been said, the current result is very much like the first word of a language yet to be developed – before this can become useful, an entirely new lexicon of brain usage and translation signals will need to developed.
At the same time, the battlefield implications of a thoroughly useful, consistent, soundless link can probably not be overstated – a unit, reacting in real time as a single, coherent, flexible entity could be a very powerful thing, and would be much harder to ambush.
Unless, of course, they lost reception mid-firefight.