91st Engineering Battalion
Lineage/DateLine
"Acts Not Words"




The Army did not begin a formal program for determining lineage and honors until the 1920s. Before that time, considerable confusion existed within the Army about the accepted procedures and methods for determining the prior history of units and their entitlement to battle honors. With the demobilization of the Army following World War I, many distinguished units were lost from the rolls. To avert such problems in the future, the Historical Section of the Army War College assumed responsibility for maintaining historical information about Army units: thus lineage work began.

Today the Force Structure and Unit History Branch continues the work begun by the Historical Section of the Army War College. The branch maintains historical information on active and inactive units in all components - Regular Army, Army Reserve, and Army National Guard, and prepares official Lineage and Honors Certificates. On the basis of research in primary and secondary material, the certificates outline the major organizational changes undergone by the unit and provide a list of the official battle honors (campaign credit and decorations) that the unit has earned. The information contained on the certificates is reformatted for publication in the Army Lineage Series

While it would take a book to recount the rich history brought about by the changes of each unit in the 15th Brigade Support Battalion, an overall look at the major reorganizational elements of the Battalion Lineage presents a picture of an organization that was accustomed to fighting and brought strength from change.



91st Engineer Battalion
Lineage/DateLine

01 October 1933; Constituted in the Regular Army as the 50th Engineer Battalion (Separate).

01 January 1938; Redesignated as the 91st Engineer Battalion (Separate).

10 February 1941; Activated at Camp Shelby, Mississippi.

10 July 1942; Reorganized and redesignated as 91st Engineer Regiment (General Service).

06 August 1942; Redesignated as 91st Engineer General Service Regiment.

20 January 1946; Inactivated at Manila, Philippine Islands.

28 November 1951; Regiment (less Headquarters and Headquarters Detachments, 1st, 2nd Battalions and "E" and "F" Companies) reorganized and redesignated as 91st Engineer Combat Battalion.

14 January 1952; Activated at Fort Belvoir, Virginia.

20 May 1953; Reorganized and redesignated as 91st Engineer Engineer Battalion (Combat).

20 May 1971; Inactivated at Fort Belvoir, Virginia.

16 October 1992; Activated at Fort Hood, Texas and assigned to the 1st Cavalry Division.




The history of the 91st Engineer Battalion recorded the following significant events occurring on the dates listed.



91st Engineer Battalion
DateLine

1933
Constituted in the Regular Army as the 50th Engineer Battalion (Separate). (01 October)

1938
Redesignated as the 91st Engineer Battalion (Separate). (01 January)

1941
Activated at Camp Shelby, Mississippi. (10 February)

1942
Brisbane, Queensland, Australia. (10 April)

1942
Woodstock, Queensland, Australia. (11 April)

1942
Giru, Queensland, Australia. (23 April)

1942
Reorganized and redesignated as 91st Engineer Regiment (General Service). (10 July)

1942
Redesignated as 91st Engineer General Service Regiment. (06 August)

1942
Port Moresby, New Guinea. (31 August)

1943
Laloki River, Tatana Island. (01 May)

1944
Biak Island, East Indies (08 October)

1946
Inactivated at Manila, Philippine Islands. (20 January)

1951
Regiment (less Headquarters and Headquarters Detachments, 1st, 2nd Battalions and "E" and "F"Companies) reorganized and redesignated as 91st Engineer Combat Battalion. (28 November)

1952

Activated at Fort Belvoir, Virginia. (14 January)

1953
Reorganized and redesignated as 91st Engineer Engineer Battalion (Combat). (20 May)

1971
Inactivated at Fort Belvoir, Virginia. (20 May)

1992
Activated at Fort Hood, Texas and assigned to the 1st Cavalry Division. (16 October)





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Copyright © 1996, Cavalry Outpost Publications ® and Trooper Wm. H. Boudreau, "F" Troop, 8th Cavalry Regiment (1946 - 1947). All rights to this body of work are reserved and are not in the public domain, or as noted in the bibliography. Reproduction, or transfer by electronic means, of the History of the 1st Cavalry Division, the subordinate units or any internal element, is not permitted without prior authorization. Readers are encouraged to link to any of the pages of this Web site, provided that proper acknowledgment attributing to the source of the data is made. The information or content of the material contained herein is subject to change without notice.

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