Great Brewster Island Military Reservation

Great Brewster Island Military Reservation (1917-1946) - A World War I Coastal Military Reservation first established in 1917 on Great Brewster Island, Suffolk County, Massachusetts. Named in G.O. 6, 1937. Used during World War II as a mine observation station and AMTB gun battery site. Abandoned by the U.S. Army circa 1946.

World War I (1917-1918)

Part of the Harbor Defense of Boston, Massachusetts.

The U.S. Government initially purchased enough land on Great Brewster Island to build a seawall in 1848. The remainder of the island, 21.7 acres in total, was purchased on 18 Aug 1917 during World War I as a searchlight station. The reservation was abandoned after the end of the war.

World War II (1941-1945)

During World War II, a small post was built on Great Brewster Island Military Reservation to support a mine observation post and a 90mm gun battery, Battery AMTB 942. The post was built with just three barracks, a mess hall and a small officers quarters. The mine observation post was a small concrete structure, 13' by 13', equipped with a range finder. The AMTB battery had two fixed 90mm guns, two mobile 90mm guns, two mobile 37mm guns and an ammunition storage bunker. The AMTB battery was completed in 1943 and the mine observation station was accepted for service 18 May 1944.

Great Brewster Island Military Reservation was abandoned by the U.S. Army circa 1946 and declared excess by the GSA on 27 Jun 1950. The property was sold to a private owner on 28 Sep 1953 and passed through a number of hands until it was sold to an agency of the State of Massachusetts on 22 Mar 1973.

**Great Brewster Island Military Reservation World War II Battery** (edit list)
Battery Click on Battery links below	No.	Caliber	Type Mount	Service Years	Battery Cost	Notes
Battery AMTB 942	2 2 2	90mm 90mm 37mm	AMTB Fixed Mobile Mobile	1943-1946	$ ?
Source: CDSG

Current Status

Part of Boston Harbor Islands National Recreation Area and Boston Harbor Islands State Park, Suffolk County, Massachusetts.

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Location: Great Brewster Island, Suffolk County, Massachusetts.

Maps & Images

Lat: 42.3417654 Long: -70.8772685

Multi Maps from ACME
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Elevation: '

Sources:

U.S. Army Corps of Engineers, FUDS Archives Search Report, Findings for the former Great Brewster Island Military Reservation AMTB 942, Project No. D01MA048102, December 1997. Large PDF Download
U.S.Army, Supplement to the Harbor Defense Project of Boston, Massachusetts, (HDB-AN-45), 31 Jan 1945, CDSG

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