This is the fourth and last of a Kyiv Post series on Ukraine’s air bombardment campaign targeting Russian military logistics at middle ranges from the front lines, with the declared objective of damaging Russian army unit capacity to fight effectively by using unmanned air vehicles (UAVs) to attack Russian supply routes and logistics.The first article in the series, focusing on the aircraft used by the Armed Forces of Ukraine (AFU) in that ongoing strike campaign, is available here.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official.The second article in the series, focusing on the tactics and targeting strategies used by the AFU in that ongoing strike campaign, is available here.The third article in the series, focusing on the conduct of the campaign and damage done to date, is available here.Elite strike drone units manned by Ukraine’s most experienced combat pilots and war-seasoned flight operations planners are spearheading the country’s “middle strike” operation, a relentless air bombardment operation that in June alone destroyed hundreds of fuel trucks and shut down Russian military supply chains across a territory roughly the size of Belgium, Kyiv Post’s review of battle video, unit statements and open source reports found.Ukraine’s Unmanned Systems Forces (USF) kicked off the strike campaign with the twin objectives of degrading Russian supplies to the front line and breaking logistics links between the Russia-occupied Crimea in mid-April. Since then, USF information outlets have documented hundreds of geolocated air strikes concentrated in Russia-occupied territory in southern Ukraine, and identified the drone units carrying out the sorties.