Philippines campaign (1941–1942)

The Philippines campaign, also known as the Battle of the Philippines (Filipino: Labanan sa Pilipinas) or the Fall of the Philippines, was the invasion of the Philippines by the Empire of Japan during the Pacific War and World War II. The operation to capture the islands, which was defended by the U.S. and Philippine Armies, was intended to prevent interference with Japan's expansion in Southeast Asia. On 8 December 1941, several hours after the attack on Pearl Harbor, Japanese planes began bombing U.S. forces in the Philippines, including aircraft at Clark Field near the capital of Manila on the island of Luzon.

Source: Wikipedia — Philippines campaign (1941–1942) (CC BY-SA 4.0)