The US air force killed 20,000 Chinese civilians during WW2
Bombing of Wuhan
https://en.wikipedia.org/wiki/History_of_Wuhan#Bombing_of_Wuhan>One week before Christmas in 1944, nearly 200 American planes raided the Chinese city of Wuhan, dropping 500 tons of incendiary bombs. >Thousands of Chinese lives were lost in this incident, which has received very little attention in the intervening decades. >LeMay was pleased, declaring this his first experience with firebombing as a tactical weapon to be a successful experiment.>According to casualty statistics compiled by Hankou city in 1946, more than 20,000 were killed or injured, 7,515 buildings were bombed. >Compared with Shanghai, Guangzhou, Beijing, Tianjin and Qingdao, the destruction in Wuhan was considerably worse. 