North Korean troops were evidently untrained in dealing with Ukrainian drones, which took a high toll. In one instance, Ukrainian drone operators recorded how a North Korean soldier accidentally shot his comrade as they tried to shoot down the drone that was filming them.

North Korea suffering mass casualties, says US as Zelensky set for £1bn arms boost - South Korea, Ukraine and the US previously accused Pyongyang of sending thousands of soldiers to help Russia

Russia is deploying “human waves” of North Korean soldiers, the U.S. said, and one soldier captured by Ukraine died of his injuries. Others died by suicide.