Political map of East Asia & the Western Pacific on 11 Dec 1941 (WWII: The Greater East Asia War: Attack on Pearl Harbor), showing the following events: Attack on Pearl Harbor; Japanese capture Guam; Japan lands troops on Batan Island, Philippines; Japanese invasion of Thailand; Japanese invasion of Malaya; Japanese invasion of the Gilbert Islands; Sinking of Prince of Wales and Repulse; Germany declares war on US.

Pearl Harbor and its Aftermath

WWII: The Greater East Asia War

East Asia 1941.1211

Pearl Harbor and its Aftermath

World War II, Pacific War, Second Sino-Japanese War (11 December 1941)

Historical Map of East Asia & the Western Pacific

On the morning of December 8 (still December 7 in Hawaii), Japan launched simultaneous attacks against American and British forces across the Pacific, bombing the US Pacific fleet at Pearl Harbor and invading Malaya, Thailand, Guam, the Philippines and the Chinese concessions. Three days later, Germany supported Japan by declaring war on the United States.

Main Events

Attack on Pearl Harbor

At 7:48 am Hawaiian Time, Imperial Japanese fighters, bombers, and torpedo planes launched from six aircraft carriers mount a surprise attack on the United States naval base at Pearl Harbor, Hawaii Territory. The attack damages all eight US battleships present, sinking four, as well as hitting three cruisers, three destroyers, and two other ships. In addition, 188 US aircraft are destroyed and 2,403 Americans are killed, with another 1,178 wounded. Japanese losses are much lighter. The following day the US declares war on Japan.

Japanese capture Guam

Japan lands troops on Batan Island, Philippines

Japanese invasion of Thailand

At 23:00 on 7 December, Japan demands that Thailand allow entrance to the Japanese military, giving the Thai government two hours to respond. Several hours after the expiration of the ultimatum, the Japanese simultaneously invade Thailand from French Indochina and make landings south of Bangkok and along the Kra Isthmus. After initial fighting, Thai Prime Minister Phibun arranges a ceasefire at noon, agreeing to form an alliance with Japan on 14 December.

Japanese invasion of Malaya

Just after midnight on 8 December 1941 (before the attack on Pearl Harbor - it is still 7 December in Hawaii), Japanese troops under Tomoyuki Yamashita land at Khota Baru, Malaya. Khota Baru is the Royal Air Force's and Royal Australian Air Force's base of operations in northern Malaya, but attempts to bomb the incoming Japanese transports fail to stop the Japanese landing three infantry battalions by noon. Outnumbered the British and Australians withdraw south.

Japanese invasion of the Gilbert Islands

Forces of the Imperial Japanese Navy occupy the British colony of the Gilbert Islands, landing on Tarawa on 9 December and Makin the following day. They build a seaplane base on Makin and disperse troops along the coastlines of the atolls to monitor the movement of Allied forces in the South Pacific.

Sinking of Prince of Wales and Repulse

Japanese land-based bombers and torpedo bombers of the Imperial Japanese Navy sink the British Royal Navy battleship HMS Prince of Wales and battlecruiser HMS Repulse off the east coast of British Malaya, near Kuantan. The British ships had been sent to intercept the Japanese invasion fleet north of Malaya.

Germany declares war on US

Claiming that US President Franklin Roosevelt has repeatedly violated all rules of neutrality, noting in particular his "shoot on sight" order, Nazi Germany declares that it is in a state of war with the United States of America

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