The 41st Engineer Battalion was originally constituted as the 126th Engineer Mountain Battalion on 27 August 1942, and was activated 14 September 1942 at Camp Carson, Colorado.
The battalion played an important role in the 10th Mountain Division’s successful offensive in the North Apennines and the Po Valley Campaigns. The battalion was inactivated on 21 November 1945 at Camp Carson, Colorado. On 18 June 1948, the battalion was redesignated as the 41st Engineer Combat Battalion and assigned to the 10th Infantry Division. From 1955 to 1958, the battalion participated in Operation Gyroscope, the Army’s Unit Overseas Rotation System, with the division in Germany as a NATO component. On 14 June 1958, the battalion inactivated at Fort Benning, Georgia.
On 2 September 1985, the 41st Engineer Battalion reactivated at Fort Drum, New York. As an organic unit of the 10th Mountain Division (Light Infantry), the 41st Engineer Battalion “Sappers” provide combat and construction engineer support to the infantry brigades, the Aviation Brigade, the Division Artillery (DIVARTY), and the Division Support Command (DISCOM). The battalion also provides construction, and snow and ice clearing support, to the installation.
In August 1992, the battalion deployed as part of the 10th Mountain Division Task Force to South Dade County, Florida to provide disaster relief in the aftermath of Hurricane Andrew.
In December 1992, the battalion deployed to provide humanitarian assistance in the nation of Somalia in support of Operation Restore Hope, later Operation Continue Hope. Sapper platoons continued to deploy to Somalia in support of 10th Mountain Division infantry task forces as part of the United Nations Quick Reaction Force (QRF).
In September 1994, the battalion deployed to Haiti as part of the 10th Mountain Division Task Force (Joint Task Force 190/Multinational Force Haiti) in support of Operation Restore Democracy. The 41st Engineer Battalion staff formed the nucleus of the joint engineer staff, augmented by the U.S. Navy, Air Force, and other Army organizations.
From July 1999 to March 2000, the 41st Engineer Battalion (-) deployed with the 10th Mountain Division and served in Bosnia-Herzegovina as a part of Stabilization Force 6 (SFOR 6) in support of Operation Joint Forge. The 41st Engineer Battalion staff formed the nucleus of the Multinational Division – North (MND-N) engineer staff.
From June to September 2000, the 41st Engineer Battalion (-) was an integral part of the 10th Mountain Division’s participation in the Joint Contingency Force – Advanced Warfighting Experiment (JCF-AWE), the Army’s digitization experimentation process for the light forces.
On 16 October 2014, the 41st Engineer Support Battalion was reactivated and will serve in the 2nd Brigade Combat Team, 10th Mountain Division.
Most recently elements of the 41st EN deployed to Afghanistan in support of Operation Freedom Sentinel from 2015-2016.