<P> The Second Sino - Japanese War between the Empire of Japan and the Republic of China had been in progress since 7 July 1937 , with hostilities dating back as far as 19 September 1931 with the Japanese invasion of Manchuria . However , it is more widely accepted that the Pacific War itself began on 7 / 8 December 1941 , when Japan invaded Thailand and attacked the British possessions of Malaya , Singapore , and Hong Kong as well as the United States military and naval bases in Hawaii , Wake Island , Guam and the Philippines . </P>
<P> The Second Sino - Japanese War between the Empire of Japan and the Republic of China had been in progress since 7 July 1937 , with hostilities dating back as far as 19 September 1931 with the Japanese invasion of Manchuria . However , it is more widely accepted that the Pacific War itself began on 7 / 8 December 1941 , when Japan invaded Thailand and attacked the British possessions of Malaya , Singapore , and Hong Kong as well as the United States military and naval bases in Hawaii , Wake Island , Guam and the Philippines . </P>
when did the us enter japan in ww2
when did the us enter japan in ww2
7 / 8 December 1941
7 / 8 December 1941