history deadliest bloodiest conflicts rebellion lushan ranks
war world germany bomb ii british raf bombing deadliest wars air wwii raid bombs wartime cologne raids berlin unexploded destroy
1937 sino deadliest japonaise guerre landing japonesa bloodiest giapponese attacking bataille losing defense conflicts conquest zweiter krieg chinesisch japanischer landings
deadliest wars history human world war 1939 humanity barnorama theinfong battle deaths estimate fought japanese soviet