861st Engineer Company

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861st ENGINEER COMPANY, RIARNG

Organized 17 August 1865 in the Rhode Island Militia at Providence as Company D (Emmet Guards), Rhode Island Guards Regiment

Redesignated 1 May 1875 as Company D, 5th Ba

ttalion of Infantry

Redesignated 1 June 1887 as Company H, 2d Regiment of Infantry; concurrently Rhode Island Militia redesignated as the Brigade of Rhode Island Militia

(Brigade of Rhode Island Militia redesignated 15 April 1907 as the Rhode Island National Guard)
Converted, reorganized, and redesignated 4 November 1908 as the 16th Company, 2d Artillery District, Coast Artillery Corps

Redesignated 3 September 1914 as the 16th Company, 2d Coast Defense Command, Coast Artillery Corps

Redesignated 18 December 1914 as the 16th Company, 1st Artillery District, Coast Artillery Corps

Redesignated 2 January 1917 as the 16th Company, Rhode Island Coast Artillery

Called into Federal service 25 July 1917; drafted into Federal service 5 August 1917

Redesignated 31 August 1917 as the 16th Company, Coast Defenses of Narragansett Bay

Demobilized 21 December 1918 at Fort Wetherill, Rhode Island

Reconstituted 7 June 1920 in the Rhode Island National Guard as the 16th Company, Coast Artillery Corps

Reorganized and Federally recognized 30 June 1920 at East Greenwich

Reorganized and redesignated 1 September 1921 as the 3d Company, Coast Artillery Corps

Reorganized and redesignated 31 January 1922 as the 347th Company, Coast Artillery Corps

Reorganized and redesignated 1 October 1923 as Battery I, 243d Artillery (Coast Artillery Corps)

Reorganized and redesignated 11 July 1924 as Battery I, 243d Coast Artillery

Reorganized and redesignated 15 April 1940 as the Seachlight Battery, 243d Coast Arillery
Inducted into Federal service 16 September 1940 at East Greenwich

Redesignated 22 November 1940 as Battery K, 243d Coast Artillery

Inactivated 10 April 1944 at Camp Forrest, Tennessee

Disbanded 7 October 1944

Reconstituted 25 August 1945 in the Rhode Island National Guard

Redesignated 2 July 1946 as Battery B, 705th Antiaircraft Artillery Gun Battalion

Reorganized and Federally recognized 19 August 1947 at East Greenwich

Ordered into active Federal service 14 August 1950 at East Greenwich; released from active Federal service 13 July 1952 and reverted to state control

Reorganized and redesignated 1 October 1953 as Battery B, 705th Antiaircraft Artillery Battalion

Reorganized and redesignated 1 April 1959 as Battery B, 1st Automatic Weapons Battalion, 243d Artillery

Converted, reorganized, and redesignated 1 May 1962 as Company B, 243d Engineer Battalion

Reorganized and redesignated 1 May 1968 as the 861st Engineer Company

Ordered into active Federal service 19 January 2005 at East Greenwich; released from active Federal service 26 July 2006 and reverted to state control

HOME STATION: East Greenwich

CAMPAIGN PARTICIPATION CREDIT
Global War on Terrorism
Operation Iraqi Freedom

BY ORDER OF THE SECRETARY OF THE ARMY:


ROBERT J. DALESSANDRO
Director, Center of Military History