On August 8, Russian fighters of the Wagner PMC took pictures in front of their HQ in occupied Popasna Ukraine. The address of a nearby bomb shelter is on the building; "Myronivs'ka Street, 12"
The Ukrainians saw this and simply punched the global address: 48.6162, 38.3636 (Latitude, Longitude) into their computers to programme a GPS-enabled shell for that location. It flew into the building at Mach 2.5 and over 100 Wagners were dead.
Wagner is a Russian private war merchant group (the type Americans call Private Military Contractors) and they are fighting Mali and Syria, among other places as we speak.