73rd Engineer Company (Assault Ribbon Bridge)
The 15th Combat Engineer Battalion was reactivated at Fort Lewis in June 1972. In 1983, Delta Company was reorganized as a General Support Heavy Engineer Company, and the Bridge Company became Echo Company. On 1 April 1984, Echo Company reorganized to form to form the 73rd Engineer Company (Assault Ribbon Bridge), I Corps, and attached them to the 15th Combat Engineer Battalion. In January 1990, the Army ordered the 9th Infantry Division to inactivate. Charlie Company cased its guidon on 1 October 1990. Delta Company inactivated on 14 February 1991, when it reorganized to form the nucleus of the 102nd Engineer Company, 199th Infantry Brigade(Motorized). Soldiers and equipment from across the battalion were used to fill the new company. The 73rd Engineer Company, after its three-month combat tour in Operation Desert Storm, returned to I Corps control and was attached to 3rd Battalion, 2nd Air Defense Artillery Regiment, on 1 July 1991. The remaining companies and the battalion Headquarters inactivated on 1 August 1991.
