The Philippines Campaign refers to a series of military operations during World War II, primarily from December 1941 to May 1942. It involved the defense of the Philippines against the invading forces of Japan following the attack on Pearl Harbor. The campaign included significant battles such as the Battle of Bataan and the Battle of Corregidor, where American and Filipino troops fought bravely despite being outnumbered and outgunned. Ultimately, the campaign ended with the surrender of Allied forces in May 1942, leading to the occupation of the Philippines by Japanese forces. This event marked a significant moment in the war, as it showcased the challenges faced by the Allies in the Pacific theater and set the stage for future operations to reclaim the islands.