Machines are increasingly replacing humans on the front line, but troops are still vital for defending territory.

Ukrainian soldiers said the use of medium-range drones has become more common as key targets move farther back.

Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: Ukrainian service members prepare FPV drones during the unilaterally proposed three-day ceasefire declared by Russia, ...

The depth of what is known as the kill zone, a heavily contested frontline area under constant surveillance and fire, has already reached 25 km or more on both sides of the front line. The high ...