There's a Fighter Base Located Where?

Umnak is part of the "Fox" islands, southwest of mainland Alaska in the Aleutian chain. It is the third largest of the Aleutian islands, having a land mass of around 675 square miles. At this time in it's history, Umnak supported about 50 Aleut residents, about 15,000 sheep, and a heard of imported reindeer. Umnak has no natural harbor, supports no trees, and is very mountainous. There were serious doubts that a runway could in fact be constructed here. General Buckner solved the runway problem by importing to Umnak 3,000,000 square feet of Marsden Matting, perforated-steel plating  (PSP) that could be assembled with other steel plates to create a flat surface upon which aircraft could take off and land. On March 31st, 1942 the 807th had completed the 3,000 by 100 foot runway on Umnak for use by Jack Chenault's P-40 fighter aircraft.

The joint Board in late November 1941 had approved the construction of an Army airfield on Umnak Island, not only to provide local air protection for the naval base at Dutch Harbor, but also for the broader purposes of blocking a Japanese advance toward the mainland and permitting the projection of Army air power into the more distant Aleutians. Army Engineers under the command of Col. Benjamin B. Talley began the construction of a runway at Otter Point on the northeastern end of Umnak in mid-January 1942 and soon thereafter undertook similar work on an intermediate base at Cold Bay near the tip of the Alaska Peninsula, where construction of an airfield had been started by the Civil Aeronautics Administration. The Umnak base became the Army's Fort Glenn, and the Cold Bay base Fort Randall, with Fort Mears, the Army garrison for Dutch Harbor, in between. Both of the new fields were usable by 1 April, although just barely so. When the enemy approached two months later, Umnak had a garrison of about 4,000, Fort Mears of over 6,000, and Cold Bay of about 2,500, including engineer troops, but also including balanced complements of infantry and of field and antiaircraft artillery units. Generals Buckner and DeWitt had wanted a much larger combat force for the forward base on Umnak but had to be content with the 2,300 or so combat troops that the War Department had authorized.

While the Umnak and Cold Bay airfields were being rushed to completion, the Japanese High Command was planning to attack and occupy points in the Aleutian Islands as part of their "second phase" offensive. By April Japanese planners had agreed on the main features of the operation. Japanese task forces were to undertake a two-pronged drive against Midway and the Aleutian Islands in the early part of June. Aside from its diversionary aspect to cover the Midway strike, the Aleutian phase of the operations was to be purely defensive. After capturing Midway and Kiska, the Japanese intended to use them as bases for an aerial patrol of North Pacific waters. The islands would also be outposts in a new defense perimeter that would be extended in due course to the Samoan and Fiji Islands and New Caledonia.

The enemy knew little of American activities in the Aleutians since the war's beginning. The Japanese planners thought the United States had extensive military installations at Dutch Harbor and smaller garrisons on Adak, Kiska, and Attu. They also believed that there were one or two small aircraft carriers as well as cruisers and destroyers operating in Aleutian waters. But they knew nothing of the new airfields east and west of Dutch Harbor then nearing completion.

Dozer stuck in the Tundra - 1943

The Umnak base became the Army's Fort Glenn
(Current Photo - Doerte)

You can now purchase The History Channel's "The Bloody Aleutians"