Pacific Theater Timeline

  • Pearl Harbor

    Pearl Harbor
    Just before 8 a.m. on December 7, 1941, hundreds of Japanese fighter planes attacked the American naval base at Pearl Harbor near Honolulu, Hawaii. The barrage lasted just two hours, but it was devastating: The Japanese managed to destroy nearly 20 American naval vessels, including eight enormous battleships, and more than 300 airplanes. More than 2,000 Americans soldiers and sailors died in the attack, and another 1,000 were wounded. The day after the assault, President Franklin D. Roosevelt as
  • Loss of Philippines

    Loss of Philippines
    The defending forces outnumbered the Japanese invaders by 3 to 2, but were a mixed force of non-combat experienced regular, national guard, constabulary, and newly created Commonwealth units. The Japanese used their best first-line troops at the outset of the campaign and concentrated its forces in the first month of the campaign, enabling it to swiftly overrun most of Luzon.
  • Battle of Java Sea

    Battle of Java Sea
    In early 1942, with the Japanese rapidly advancing south through the Dutch East Indies, the Allies attempted to mount a defense of Java in an effort to hold the Malay Barrier. Concentrating under the a unified command known as American-British-Dutch-Australian (ABDA) Command, Allied naval units were divided between bases at Tandjong Priok (Batavia) in the west and Surabaya in the east. Overseen by Dutch Vice Admiral Conrad Helfrich, ABDA forces were badly outnumbered and in poor condition for th
  • Bataan Death March

    Bataan Death March
    After the April 9, 1942, U.S. surrender of the Bataan Peninsula on the main Philippine island of Luzon to the Japanese during World War II (1939-45), the approximately 75,000 Filipino and American troops on Bataan were forced to make an arduous 65-mile march to prison camps. The marchers made the trek in intense heat and were subjected to harsh treatment by Japanese guards. Thousands perished in what became known as the Bataan Death March.
  • Doolittle Raid

    Doolittle Raid
    The Doolittle Raid, also known as the Tokyo Raid, on Saturday, April 18, 1942, was an air raid by the United States of America on the Japanese capital Tokyo and other places on the island of Honshu during World War II, the first air raid to strike the Japanese Home Islands. It demonstrated that Japan itself was vulnerable to American air attack, served as retaliation for the Japanese attack on Pearl Harbor on Sunday, December 7, 1941, and provided an important boost to American morale. The raid
  • Battle of Coral Sea

    Battle of Coral Sea
    This four-day World War II skirmish in May 1942 marked the first air-sea battle in history. The Japanese were seeking to control the Coral Sea with an invasion of Port Moresby in southeast New Guinea, but their plans were intercepted by Allied forces. When the Japanese landed in the area, they came under attack from the aircraft carrier planes of the American task force commanded by Rear Admiral Frank J. Fletcher. Although both sides suffered damages to their carriers, the battle left the Japane
  • Battle of Midway

    Battle of Midway
    Six months after the attack on Pearl Harbor, the United States defeated Japan in one of the most decisive naval battles of World War II. Thanks in part to major advances in code breaking, the United States was able to preempt and counter Japan’s planned ambush of its few remaining aircraft carriers, inflicting permanent damage on the Japanese Navy. An important turning point in the Pacific campaign, the victory allowed the United States and its allies to move into an offensive position.
  • Island Hopping Strategy

    Island Hopping Strategy
    In June 1942, the US emerged from the Battle of Midway with naval superiority in the Pacific. General MacArthur and Admiral Chester W. Nimitz seized the initiative, launching an ‘Island Hopping’ campaign. Their strategy was to capture the Pacific islands one by one, advancing towards Japan and bypassing and isolating centres of resistance. Macarthur and Nimitz planned a two pronged attack: MacArthur would push northwest along the New Guinea coast and into the Bismarck Archipelago with the eventu
  • Guadalcanal

    Guadalcanal
    The World War II Battle of Guadalcanal was the first major offensive and a decisive victory for the Allies in the Pacific theater. With Japanese troops stationed in this section of the Solomon Islands, U.S. marines launched a surprise attack in August 1942 and took control of an air base under construction. Reinforcements were funneled to the island as a series of land and sea clashes unfolded, and both sides endured heavy losses to their warship contingents. However, the Japanese suffered a far
  • Battle of Leyte Gulf

    Battle of Leyte Gulf
    This World War II clash followed the Allied landing at the Philippine island of Leyte in October 1944. The Japanese sought to converge three naval forces on Leyte Gulf, and successfully diverted the U.S. Third Fleet with a decoy. At the Suriago Strait, the U.S. Seventh Fleet destroyed one of the Japanese forces and forced a second one to withdraw. The third successfully traversed the San Bernadino Straight but also withdrew before attacking the Allied forces at Leyte. With much of its surface fl
  • Battle of Iwo Jima

    Battle of Iwo Jima
    The American amphibious invasion of Iwo Jima during World War II stemmed from the need for a base near the Japanese coast. Following elaborate preparatory air and naval bombardment, three U.S. marine divisions landed on the island in February 1945. Iwo Jima was defended by roughly 23,000 Japanese army and navy troops, who fought from an elaborate network of caves, dugouts, tunnels and underground installations. Despite the difficulty of the conditions, the marines wiped out the defending forces
  • Battle of Okinawa

    Battle of Okinawa
    Last and biggest of the Pacific island battles of World War II, the Okinawa campaign (April 1—June 22, 1945) involved the 287,000 troops of the U.S. Tenth Army against 130,000 soldiers of the Japanese Thirty-second Army. At stake were air bases vital to the projected invasion of Japan. By the end of the 82-day campaign, Japan had lost more than 77,000 soldiers and the Allies had suffered more than 65,000 casualties—including 14,000 dead.
  • Atomic Bomb on Hiroshima

    Atomic Bomb on Hiroshima
    On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people; tens of thousands more would later die of radiation exposure. Three days later, a second B-29 dropped another A-bomb on Nagasaki, killing an estimated 40,000 people. Japan’s Emperor Hirohito announced his country’s unconditional surrender in World War II in
  • Atomic Bomb on Nagasaki

    Atomic Bomb on Nagasaki
    On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people; tens of thousands more would later die of radiation exposure. Three days later, a second B-29 dropped another A-bomb on Nagasaki, killing an estimated 40,000 people. Japan’s Emperor Hirohito announced his country’s unconditional surrender in World War II in
  • VJ Day

    VJ Day
    On August 14, 1945, it was announced that Japan had surrendered unconditionally to the Allies, effectively ending World War II. Since then, both August 14 and August 15 have been known as “Victoryover Japan Day,” or simply “V-J Day.” The term has also been used for September 2, 1945, when Japan’s formal surrender took place aboard the U.S.S. Missouri, anchored in Tokyo Bay. Coming several months after the surrender of Nazi Germany, Japan’s capitulation in the Pacific brought six years of hostili