Ukraine’s 3rd Army Corps is flying explosive ground robots across the front line under heavy bomber drones and dropping them as far as 12 miles (19 kilometers) into Russian-held territory in northern Donetsk. The corps calls the offensive Operation Vivaldi, went public with it on September 15, and on September 20 put its results at 48 square miles (125 square kilometers) retaken and more than 3,000 Russian soldiers killed since it began.

The Telegraph published a frontline account of the tactic on September 26, from the corps’ 2nd Mechanised Battalion. Its commander, who goes by the call sign Darwin, told the paper no other army had air-dropped ground robots behind enemy lines until now, and that the robots had reached targets so deep that a Russian officer, in an intercepted exchange, refused to believe a Ukrainian machine had hit his men.

The kill figure and the 48 square miles come from the corps’ own Telegram channel. The Institute for the Study of War, which tracks the same stretch of front from geolocated footage, has confirmed that the three villages the corps names changed hands. It has confirmed nothing about the toll.

Ukraine Blinds Russian Drones Before Every Robot Drop

Each drop begins with jamming. The battalion blinds Russian reconnaissance drones over the sector, drives Russian infantry into cover with drones and artillery, then flies the carrier across at night. “The most difficult part is to reach the point where you should lift the drone,” Darwin told The Telegraph.

The sequence exists because the carrier is the weak point. A drone large enough to lift a robot is large enough for Russian troops to see, and Darwin said a machine gun is enough to bring one down. Three or four Russian drones sit over his positions at any moment and up to 100 pass over the battalion in a day, so the window for a drop has to be manufactured.

The corps has not named the carrier. Its commander, Brigadier General Andrii Biletskyi, described the aircraft as heavy bomber drones and said they deliver suicide ground drones more than 10 kilometers (6 miles) into the Russian rear, per the corps’ Telegram posts as carried by United24 Media. Darwin’s 12 miles is the deepest run the battalion described. The robots themselves range from flatbed carriers for ammunition and casualties to machine-gun mounts and one-way vehicles packed with explosives, and Ukrainian soldiers call the model used on this front Gryphon.

The tactic escalates what DroneXL reported in March, when the K2 Brigade stood up the first battalion built around armed ground robots, and in April, when Ukraine’s defense ministry said armed ground robots were running 9,000 frontline missions a month. Those robots drove to their targets. These are flown there.

The 3rd Army Corps’ Numbers Rest On Its Own Telegram Posts

Operation Vivaldi ran in two phases the corps calls seasons. The first, per Biletskyi, retook 29 square miles (75 square kilometers) and killed about 1,500 Russians. The second, announced September 20, added 19 square miles (50 square kilometers), 800 killed, and the villages of Shandryholove, Derylove and Drobysheve near Lyman.

The Institute for the Study of War’s September 20 assessment repeats those figures as the corps’ claims and credits the operation with a limited break out of positional warfare. It does not confirm the area or the casualties. Euromaidan Press, reading the same ISW mapping, reports that the operation broke up Russia’s planned pincer on Lyman. Newsweek asked the Russian defense ministry for comment on September 21 and printed none. Ukrainian outlet RBC Ukraine also narrowed Biletskyi’s world-first claim: air delivery of ground robots is not new, it reported, but doing it with kamikaze robots at this range is.

The other units under the corps for Vivaldi were the 60th Mechanized Brigade, the 21st Kraken regiment, the HUR special unit Artan and the Dozor border detachment, against Russia’s 20th Army, 25th Army and 1st Tank Army.

DroneXL’s Take

The 3,000 is the least important number in this story, and I’d treat it the way ISW does: as a claim by the unit that has every reason to make it. The part that is verified, by geolocated footage and by a Russian officer who wouldn’t believe his own intercept, is the delivery method. A heavy bomber quad is now a truck for ground robots, and the range of a tracked robot stopped mattering the moment someone else flies it to the target. What decides whether the tactic keeps working is not the robot, it’s the jamming that blinds the Russian drones long enough for the carrier to cross, and Darwin says as much. Watch the next Vivaldi update from the corps for the drop distance, not the body count: if the 10 kilometers becomes 20, the Russian rear on this front has no safe depth left.

Sources: The Telegraph, 3rd Army Corps via United24 Media, Institute for the Study of War, Newsweek

DroneXL uses automated tools to support research and source retrieval. All reporting and editorial perspectives are by Haye Kesteloo. Read our editorial standards.