WarMay 31, 2026 9:08 am • 1 min readService members of the 117th Brigade of the Territorial Defence Forces operate a Ukrainian-made 120mm mortar towards Russian positions on March 9, 2025 in Sumy Oblast, Ukraine. (Diego Fedele/Getty Images)Russia has lost around 1,364,060 troops in Ukraine since the beginning of its full-scale invasion on Feb. 24, 2022, the General Staff of the Armed Forces of Ukraine reported on May 31.The number includes 1,560 casualties that Russian forces suffered over the past day.According to the report, Russia has also lost 11,962 tanks, 24,657 armored combat vehicles, 101,237 vehicles and fuel tanks, 42,987 artillery systems, 1,819 multiple launch rocket systems, 1,399 air defense systems, 436 aircraft, 353 helicopters, 320,327 drones, 1,519 ground robotic systems, 33 warships and boats, and two submarines.Ukraine's General Staff has not revealed its own losses during the full-scale invasion, citing operational secrecy.Independent Western think-tank reports agree that the Russian casualties significantly surpass Ukraine's losses, with the D.C.-based Center for Strategic and International Studies estimating the ratio to be "roughly 2.5:1 or 2:1."A January 2026 CSIS report said Ukraine has likely suffered between 500,000 and 600,000 casualties from February 2022 to December 2025, of which between 100,000 and 140,000 are thought to be killed in action (KIA).