[Darth Stalin]

Originally Posted by dragoon500ly

During this period, the 9th is part of I Corps, it was made up of two light/motorized brigades, a NG mechanized brigade (round out), as well as a combat aviation brigade. The 9th also had an additional NG armored battalion and a USAR engineer combat battalion, a RA engineer battalion and a CH47 aviation company, the 2-75 Ranger battalion, the 1st Special Forces Group and the 35th ADA Brigade are affiliated.

I Corps was intended for use along the Pacific Rim, along with the reinforcement of South Korea in the event of a NK attack.

Read more about that here:
http://www.history.army.mil/books/DA...9/CH5.htm#C5N6

Conversion of the 9th Infantry Division (Motorized)

The 9th Infantry Division (Motorized) was conceived by the Army leadership as a test bed for the design of a high technology, motorized light division. Advocates believed that it offered distinctive advantages in strategic deployability and sustainability and a high degree of tactical mobility and lethality if properly equipped, and at a low cost. Advocates contended the division could effectively meet mid-intensity and regional threats usually addressed by heavy conventional forces. In 1988 the Army ended this experiment and began to convert the division to a mechanized infantry design. Congress had refused to fund a light attack vehicle (LAV) and an armored gun system (AGS) that the Army considered necessary for a motorized division. The AGS, a twenty-ton tracked vehicle that mounted a 105-mm. rapid-f ire cannon that could be airlifted in a C-130, was canceled in 1987. The configuration and role of the 9th Infantry Division (Motorized) raised many doctrinal issues regarding the feasibility of organizing specialized divisions whose equipment was not standardized throughout the Army 's force structure. Other questions concerned the suitability of the division's equipment for its intended mission. For example, the HMMWV, the centerpiece of the motorized concept, seemed to lack the payload and armor protection to serve as a weapons carrier or platform .

Conversion of the 9th Division from a motorized to a mechanized division proceeded slowly in FY 1989. The Army liquidated the unorthodox test agency, the Army Development and Employment Agency, which had tried to adapt off-the-shelf, high-technology systems to the motorized division concept. A decision on the division's conversion to mechanized awaited approval of an environmental impact statement, not executed until FY 1990, regarding the effect of mechanized operations at Fort Lewis. The Army inactivated the division's 2d Brigade in FY 1988 to meet end strength reductions called for in the FY 1989 amended Army budget. In mid-FY 1989 the 9th Division's two active brigades, the 1st and 3d, each had three combined arms battalions (CAB). The 1st Brigade had a combined arms battalion (heavy) with two assault gun companies and an infantry company, a combined arms battalion (light) with two infantry companies and an assault gun company, and an armor battalion. The 3d Brigade was composed of a combined arms battalion (heavy), a combined arms battalion (light), and a light attack battalion of HMMWVs mounted with Tube-Launched, Optically Tracked, Wire-Guided Missiles (TOWs) and machine guns. The division's third brigade was replaced by an ARNG roundout brigade, the 81st Mechanized Brigade of the Washington ARNG .

The division's organization in FY 1989 was temporary pending a study of several configurations. One configuration envisioned a division of three brigades-armored, mechanized, and motorized. On 18 May 1989, the Chief of Staff endorsed planning that entailed creating a division of four armored, three mechanized infantry, and three motorized battalions and directed TRADOC to develop an appropriate AirLand Battle doctrine for this configuration. He also directed TRADOC to avoid impinging on the heavy modernization plan as it developed the division's design and to study the feasibility of adopting the Marine Corps' widely used Light Armored Vehicle (LAV-25). During FY 1989 General Vuono approved the conversion of two of the division's CAB (Light) battalions to mechanized infantry battalions. Planners were also entertaining a heavy design configuration of five armored battalions and five mechanized infantry battalions in an Army of Excellence design as a long-term goal.

and here:

http://www.history.army.mil/books/DA...91/ch08.htm#n3

On 5 February 1989, QUICKSILVER directed restructuring the 9th Infantry Division (Motorized) by 1991 to a separate motorized brigade with a strength of 3,900 men. Inactivation of the 9th, formerly known as the High Technology Light Division (HTLD), began in FY 90, but official inactivation of the division was rescheduled for 15 August 1992. Having inactivated its 2d Brigade in February 1988, the 9th inactivated its 1st Brigade in FY 90 and both its Division Artillery and 3d Brigade on 15 February 1991. The soldiers and equipment of the 3d Brigade were re-formed into the separate 199th Infantry Brigade.