Dee ihe na-aga n'ihu maka paragraf a - ụgbọelu "Kaga" bu ụzọ kwado ndị agha Japan na China n'oge ihe mere na Shanghai na 1932 ma sonye na Agha nke Abụọ nke China na Japan na ngwụcha afọ ndị 1930. Ya na ndị ọzọ na-ebu ụgbọ mmiri ise, ọ sonyere na mwakpo Pearl Harbor na Disemba 1941 na mwakpo nke Rabaul na Southwest Pacific na Jenụwarị 1942. N'ọnwa na-eso ya, ụgbọelu ya sonyere na mwakpo ụgbọelu jikọtara na Darwin, Australia, na-enyere aka inweta mmeri nke Dutch East Indies site n'aka ndị agha Japan. Ọ hapụrụ mwakpo nke Oké Osimiri India n'ọnwa Eprel n'ihi na ọ ga-alaghachi Japan maka mmezi mgbe ọ kụkasịrị n'ụsọ oké osimiri n'ọnwa Febụwarị. Mgbe emezigharịchara ya, "Kaga" sonyeere 1st Air Fleet maka mwakpo na Midway Atoll
n'ọnwa Jun afọ 1942.