On 7 December 1941, Japan launched a surprise air attack on the US naval base at Pearl Harbor in Hawaii. Japanese forces also overran Allied possessions in south-east Asia and The Philippines. Japan hoped for a short war, seeking to quickly weaken US naval strength and capture strategically vital oil supplies. But American industrial might proved too great to overcome.

In June 1942, a decisive aircraft carrier battle near Midway Island marked the end of Japanese expansion. Allied forces also successfully fought back in New Guinea and the Solomon Islands, and removed the threat to Australia.

Photographs

USS Yorktown at Midway

USS Yorktown is hit on her portside during the Japanese bombardment in the Battle of Midway in the Pacific on 4 June 1942.
© IWM (NYF 42432)
USS Yorktown is hit on her portside during the Japanese bombardment in the Battle of Midway in the Pacific on 4 June 1942.

The carrier USS Yorktown is hit on her portside during the Japanese bombardment in the Battle of Midway in the Pacific on 4 June 1942. The Yorktown was the only American carrier lost in the battle. Japanese losses included 4 carriers and more than 3,000 men killed or captured. 

The United States now had the initiative and began a two-pronged campaign to drive back the Japanese. In the south-west Pacific, General MacArthur advanced towards the Philippines. The main attack was in the central Pacific, where Admiral Nimitz fought an island-hopping campaign with his carrier battle-groups. The capture of islands such as Tarawa, Saipan and Iwo Jima saw heavy casualties on both sides.

Photographs

Flying over the battleship HMS King George V

Three Grumman Avengers flying over the battleship HMS KING GEORGE V and other units of the British Pacific Fleet when on the way to attack Sakishima targets in support of the American landing on Okinawa.
© IWM A 29174
Three Grumman Avengers flying over the battleship HMS King George V and other units of the British Pacific Fleet.

Three Grumman Avengers flying over the battleship HMS King George V and other units of the British Pacific Fleet when on the way to attack Sakishima targets in support of the American landing on Okinawa.

In April 1945 the Americans assaulted Okinawa, only 350 miles from Japan. Hundreds of kamikaze suicide planes failed to stop the landings. B-29 bombing raids and a submarine blockade now brought Japan to its knees. The bombing of Hiroshima and Nagasaki was the final act that ended the war.

War in the Pacific

The Battle of Singapore, February 1942.
© IWM HU 2781
Second World War

A Quick Guide To Japan's Role In The Second World War

In December 1941 Japan, already at war with China, attacked British, Dutch and American territories in Asia and the Pacific. By June 1942, Japanese conquests encompassed a vast area of south-east Asia and the western Pacific. 

Emperor Hirohito superimposed on a map showing the oil fields in the Dutch East Indies which Japan targeted.
Second World War

Why did Japan attack Pearl Harbor?

Japan attacked the U.S Pacific Fleet on the 7th of December 1941, but what led to that decision? Why did the Japanese attack the USA? - The answer is oil. In this episode of IWM Stories, Adrian Kerrison looks at why the Japanese decided to attack Pearl Harbor.

Still from footage of the Yokosuka MXY-7 Ohka - the only jet-powered suicide aircraft, suspended from the ceiling of IWM London.
© IWM
Second World War

How effective was the Japanese kamikaze campaign?

In the later stages of the Second World War in the Pacific, Japan was desperate. They turned to a new tactic - kamikaze. The kamikaze campaign trained attack squadrons specifically for this purpose, and brought into combat a new aircraft - the Yokosuka MXY-7 Ohka - the only jet-powered suicide aircraft.

They first saw action at the Battle of Okinawa in 1945, where extensive damage was done to the Allied fleet. But overall, how effective were these aircraft and this campaign?

Thin men suffering from starvation are shown at work in a valley. In the foreground a man is digging at the face of a bank, with another passing a boulder to a fellow POW, and a chain of men passing rocks behind. To the centre-left a man is hitting a metal pole into the ground with a mallet, whilst another man holds the pole in place. To the far back left, men are working at the face of a hill, and some men shown climbing the face by rope.
Second World War

What Life Was Like For POWs In East Asia During The Second World War

Japan's early successes in East Asia during the Second World War resulted in over 190,000 British and Commonwealth troops being taken prisoner. Conditions varied, but in the worst camps - such as those along the Thailand-Burma ‘Death Railway’ - prisoners suffered terribly.

Visitors exploring the Second World War exhibition
© IWM
Permanent Gallery

Second World War Galleries

IWM London
Permanent