<P> On 11 December 1941 , four days after the Japanese attack on Pearl Harbor and the United States declaration of war against the Japanese Empire , Nazi Germany declared war against the United States , in response to what was claimed to be a series of provocations by the United States government when the US was still officially neutral during World War II . The decision to declare war was made by Adolf Hitler , apparently offhand , almost without consultation . Later that day , the United States declared war on Germany . </P>
<P> On 11 December 1941 , four days after the Japanese attack on Pearl Harbor and the United States declaration of war against the Japanese Empire , Nazi Germany declared war against the United States , in response to what was claimed to be a series of provocations by the United States government when the US was still officially neutral during World War II . The decision to declare war was made by Adolf Hitler , apparently offhand , almost without consultation . Later that day , the United States declared war on Germany . </P>
when did the us enter the war with germany
when did the us enter the war with germany
11 December 1941
11 December 1941