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Two remote Aleutian islands were occupied by Japanese troops in 1942, prompting the United States to strengthen the defense of the North Pacific.
One of the most unusual episodes of World War II happened far from the major combat centers.
In June 1942, Japanese troops occupied the islands of Attu and Kiska, in the Aleutian archipelago, an area linked to Alaska.
The offensive marked the only time during the war that enemy forces controlled part of American territory.
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At the time, Alaska was not yet a state of the United States. The territory had been purchased from Russia in 1867 and remained under federal administration.
Despite the remote location, the region had enormous strategic value. The Aleutians form a chain with more than 300 islands between Alaska and Russia.
Archipelago became a key point in the North Pacific
The Aleutian Islands extend for approximately 1,900 kilometers, between Alaska and the Kamchatka Peninsula.
They separate the Pacific Ocean from the Bering Sea and function as a natural bridge between North America and Asia.
Most of the archipelago belongs to the United States. The most western islands, including the Commander Islands, remain under Russian sovereignty.
According to records from the National Park Service and the U.S. Naval History and Heritage Command, the position of the Aleutians made the region essential for the defense of the North Pacific.
Japanese attack began with bombings
The Japanese offensive began with bombings against Dutch Harbor, on the island of Unalaska, on June 3, 1942.
A few days later, Japanese troops occupied Kiska and Attu, increasing military pressure on the far north of America.
The Japanese presence in the Aleutians lasted just over a year. During this period, the United States began to treat Alaska as a priority defense area.
The occupation also endangered a route used by the United States and Canada to send supplies to the Soviet Union.
Attu was retaken in a bloody battle
In May 1943, American troops retook Attu after an extremely violent battle.
The confrontation was marked by the brutal terrain conditions, intense cold, and Japanese resistance.
In August 1943, the allies launched Operation Cottage to recover Kiska.
Upon landing, the troops discovered that the Japanese had already secretly evacuated the island.
The withdrawal was favored by the intense fog, a common characteristic in that region of the North Pacific.
Extreme weather hindered the entire campaign
Besides the combats, soldiers, ships, and planes faced storms, violent winds, severe cold, and constant fog.
The natural conditions made communication a major military challenge.
The difficulties of the campaign encouraged the use of systems based on microwaves, technology that would later have military and civilian applications.
Even so, the region continued to be considered vital to prevent further Japanese advances.
Indigenous peoples were also impacted
During the war, Alaska had about 72,000 inhabitants.
Among them were approximately five thousand Unangax, also known as Aleuts.
This indigenous people have lived in the archipelago for thousands of years. Even today, few Aleutian islands maintain permanent communities.
The episode remains a little-remembered part of World War II, but it shows how Alaska became a strategic piece in the defense of the United States.
Sources consulted: National Park Service, U.S. Naval History and Heritage Command, Encyclopaedia Britannica, and History.
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