War's Unlikely Catalyst

The US military was underprepared at the onset of World War II, with a mere 17,000 standing soldiers compared to Germany's millions. Despite the tripartite pact, Germany was not obligated to declare war on the US after Japan's attack. Hitler's decision to engage the US was not only unnecessary but also strategically detrimental, potentially delaying the war effort and allowing Germany to focus on its invasion of the Soviet Union.