#ukraine
New idea: De-mining, autonomous drones

Drone (probably a rather large one) is fitted with a metal-detecting coil. It is set loose over a battlefield that is probably mined.
Drone runs a pattern over the field and transmits coordinates of where it detected any metal.

Another drone with a more precise metal-detecting coil searches out the hits and gathers more precise data, including photos.

Another drone is dispatched with grenades to hit the mines that are found.