National Register of Historic Places

Hill 40

Agat, Guam County, Guam
Listed
March 4, 1975
Type
Site
Period
Listed
Ref No.
75001910

About this property

Hill 40 is a militarily historic landform on the island of Guam. It is located about 325 metres (1,066 ft) east of Bangi Point, south of Agat on the island's west coast, rising to a height of 40 to 60 feet (12 to 18 m) above the coastal plain, with a strategically significant view of the Agat Invasion Beach. This hill was the scene of some of the most intense fighting during the landing phase of the 1944 Battle of Guam as Allied forces sought to establish their beachhead against the defending Japanese forces. The American 4th Marine Regiment of the 1st Provisional Marine Brigade captured Hill 40 on June 21, 1944, the day of the landing. That night the Japanese launched a counteroffensive that successfully retook the hill on three occasions. The Marines regrouped and regained the hill each time. The final push came in the early morning hours of July 22. The Japanese 38th Regiment was wiped out during this military action, with 345 killed on the Bangi Point plain, immediately west of Hill 40 near the beach. Hill 40 was listed on the National Register of Historic Places in 1975.

Location

Agat, Guam County, Guam
13.37431, 144.65220

Categories

MILITARY
National Register nomination ›
Sources

Property data from the National Register of Historic Places, National Park Service (public domain).

Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

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Overview
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The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
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Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
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Historical Maps
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Finds & Access
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Literature
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Spotlight
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Nearby Historic Sites

Umang Dam
Civil War
0.4 mi
Agat Invasion Beach
Listed
0.9 mi
War in the Pacific National Historical Park
Listed
1 mi
Taleyfac Spanish Bridge
Colonial
1.1 mi
Taelayag Spanish Bridge
Colonial
1.6 mi

Questions about this property

When was Hill 40 listed on the National Register?

Hill 40 was listed on the National Register of Historic Places on March 4, 1975.

What type of historic resource is Hill 40?

Hill 40 is classified as a site in the National Register of Historic Places.

What is the period of significance for Hill 40?

The period of significance for Hill 40 is recorded as the listed era.

Can I research the history near Hill 40?

Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near Hill 40 will include this listing and all other historical records in the area.

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