⚔️📍 Berlin and Rome1941
Germany and Italy Declare War on the United States
Hitler declared war on the United States four days after Pearl Harbor — arguably his greatest strategic blunder. He was not obligated by the Tripartite Pact to do so (since Japan had attacked, not America) but assumed U.S. entry was inevitable.
Hitler's gratuitous declaration brought America's industrial might into the European war and made Germany's defeat inevitable; historians consider it one of the war's greatest strategic errors.
Outcome
U.S. enters European war; Germany's defeat becomes inevitable