 The 1st Engineer Battalion was assigned in direct support of the 1st Brigade, 1st Infantry Division while the 70th Engineer Battalion was assigned in direct support of the 2nd Brigade, 1st Infantry Division.From 1994–1996, the battalion was commanded by then-Lieutenant Colonel Thomas P. Bostick, later to achieve the rank of Lieutenant General (LTG) and serve as the Chief of Engineers, the commanding general of the US Army Corps of Engineers.The Battalion Operations Officer during ERI was then-Major Todd T. Semonite, later to achieve the rank of Lieutenant General, succeeding LTG Bostick as the Chief of Engineers.