Ukraine

Ok here is another easy hypothetical, imagine the surfboard equivalent of an umanned water-jetpowered surfboard that could be sent out to rescue people who have been swept out to sea in storm conditions. In a situation that might be too dangerous for even lifeguards to enter into, a surfboard could be driven out to the person to at minimum provide them something to hold onto and at best rescue them without ever having put a human life at risk, and rescuers will have been able to try a lower percent success rate rescue mission that was none-the-less better than sitting back and doing nothing (vs. putting a human crew in extreme risk and failing to keep them safe during the rescue).

These unmanned ground rescue vehicles make a normal stretcher immediately obsolete in any kind of open terrain scenario where help is far away, difficult or dangerous to get to (if even just to get a person being rescued to somewhere a medevac helicopter can do a pickup and take it from there). None of this precludes a human crew accompanying the UGV rescuing someone and thus it could still mostly be a human rescue operation, but the humans can be far more alert to dangers and hazards and deal with them accordingly because they aren't exhausted and distracted by carrying the person on a stretcher themselves.

Logistics will never be the same, of any kind, honestly it is such a generally useful and simple use of unmanned technology.