Why was the defense of Bataan important to the United States despite the surrender?

Despite the ultimate surrender of Allied forces, the defense of the Bataan Peninsula was strategically and morally significant for the United States for several reasons:

• Propaganda and Morale: The 99-day stand by Filipino and American troops served as a vital propaganda victory. It provided a rare glimmer of optimism for a war-weary American public during a period defined by a string of Allied defeats across the Pacific theatre.12
• Challenging Perceptions of Invincibility: The stubborn resistance proved that the Imperial Japanese Army was not the invincible force that had rapidly conquered many other colonial possessions in the region.1
• Strategic Delay: The defense forced the Japanese to commit resources and time to the peninsula, delaying their broader objectives. Furthermore, the initial withdrawal to Bataan and Corregidor Island was intended to deny the Japanese the use of Manila Bay, a critical deepwater port.13

Ultimately, the defense of Bataan stands as a testament to the resilience of the troops who fought under extreme conditions of starvation and disease, and it remains a defining, albeit tragic, chapter of the early World War II era.13