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Fort Glenn Army Air Base facts for kids

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Cape Air Force Base
Fort Glenn Army Airfield
Cape Field at Fort Glenn
Eleventh Air Force - Emblem (World War II).svg
Part of Eleventh Air Force
Umnak, Alaska
Cape AFB is located in Alaska
Cape AFB
Cape AFB
Coordinates 53°22′39″N 167°53′24″W / 53.37750°N 167.89000°W / 53.37750; -167.89000 (Cape Air Force Base)
Type Military Airbase
Site information
Controlled by Us army air corps shield.svg  United States Army Air Forces
Site history
In use 1942-1950
Battles/wars Aleutian Islands campaign


Cape Air Force Base, also called Fort Glenn Army Air Base, was a very important military base during World War II. It worked closely with a Navy base nearby, Naval Air Facility Otter Point. This historic site was recognized as a National Historic Landmark in 1987, known then as Cape Field at Fort Glenn.

The Story of Fort Glenn

Building a Secret Base

After the Attack on Pearl Harbor in December 1941, leaders worried about Alaska's safety. So, the United States Army Air Corps decided to send more planes and soldiers to Alaska. But there weren't enough airfields to hold them all.

New air bases were planned for the Aleutian Islands, especially near Dutch Harbor. Construction of bases on Umnak and Cold Bay started secretly in January 1942. Workers pretended they were building a cannery to hide the real project.

Fort Glenn Army Airfield 1942
Cape Field, later Fort Glenn Army Air Base, was secretly built at Otter Point on Umnak Island in 1942.
Fort Glenn AAF - May 1942
Personnel tents at Fort Glenn Army Air Base, May 1942

The first Army engineers arrived at what would become Fort Glenn Army Air Base on January 17, 1942. Construction began quickly. A Navy airfield, Naval Air Facility Otter Point, was built right next to it.

Engineers needed to build runways fast. Instead of concrete, they used a new material called pierced steel planking (PSP). This was metal matting that could be laid down quickly over gravel. It made the airfield usable in all kinds of weather.

The first PSP runway was finished on April 5, 1942. A C-53 plane was the first to land there on March 31. The main runway officially opened on May 23. Fort Glenn became the U.S. Army's westernmost airfield in the Aleutian Islands.

The first fighter planes, P-40 Warhawks from the 11th Fighter Squadron, arrived on May 26. More construction continued through 1942. Four runways were built, each about 5,000-foot (1,500 m) long. Hundreds of Quonset huts were built to house soldiers, replacing their temporary tents. These huts protected them from the island's frequent storms.

The base also got buildings for offices, a hospital, and radio stations. It had everything needed to support many soldiers and planes.

Fighting in the Aleutian Islands

On June 3, 1942, the Imperial Japanese Navy attacked the U.S. Army and Navy bases at Dutch Harbor. This surprise attack marked the start of the Aleutian Islands campaign.

11th Fighter Squadron Fort Glenn AAF - 1942
11th Fighter Squadron P-40 Warhawks at Fort Glenn AAB, June 1942

In response, P-40 fighters from Fort Glenn AAB fought the Japanese planes. Other planes from Eleventh Air Force also joined the battle. Both sides lost planes in the fighting.

Japanese forces also landed on Kiska Island on June 6 and Attu Island on June 7, taking control of them. The attacks on Dutch Harbor caused only minor damage.

Fort Glenn Army Air Base then became a key base for launching bombing attacks against the Japanese. Many different Air Force units were stationed there.

36th Bomb Squadron Fort Glenn AAF June 1942
36th Bombardment Squadron LB-30 Liberator and a Boeing B-17E Fortress (41-9126) at Fort Glenn AAB, June 1942

By late 1942, Fort Glenn had over 10,000 people. But new air bases were built farther west on Adak and Amchitka Island in 1943. This meant Fort Glenn became less important for attacks. Its main job changed to supporting planes and soldiers passing through.

Closing Down the Base

After World War II ended, Fort Glenn stayed open for a while. It was a refueling stop for planes flying between Japan and the United States. The main runway was even made longer, to 8,300-foot (2,500 m), for bigger planes.

By 1946, most soldiers had left. The base was only staffed by a small team. The last Air Force personnel left on September 30, 1947. The base was then put on inactive status and was mostly abandoned.

It was officially closed in 1950. The land was later given to other owners, including Native corporations and the State of Alaska. Today, many buildings, runways, and old World War II gun positions are still there.

In 1987, the site was added to the National Register of Historic Places as Cape Field at Fort Glenn. It is considered "the most comprehensive and intact World War II base in the Aleutian Islands". It is located on Umnak Island.

Today, Fort Glenn AAF is like a ghost town. However, a family of cattle ranchers lives there. They have fixed up some of the old World War II buildings. The large, untouched area of the base makes it a great example of how to preserve historical landscapes.

In 1991, historians from the National Park Service visited the site. They looked at the old buildings, roads, and objects from World War II. They decided that any cleanup should remove dangerous materials like loose cables and toxic waste. But non-toxic items, like empty barrels, could be left as part of the historical site.

On July 12, 2008, nearby Mount Okmok erupted. It sent ash 50,000 feet into the air and forced the ranch residents to leave. The eruption destroyed most of the South Pacifier Emergency landing strip, though some signs of it can still be seen from the air.

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