In 1985, the division began its reorganization from a conventional infantry division to a light infantry division. The four primary characteristics of this new light infantry division were to be: mission flexibility, rapid deployment and combat readiness at 100 percent strength with a Pacific Basin orientation. Major configuration changes included the addition of a third infantry brigade, an additional direct-support artillery battalion and the expansion of the combat aviation battalion to a brigade-sized unit. With the transfer of large quantities of heavy equipment, the 25th Infantry Division earned the designation "light" — the reorganization was completed by 1 October 1986. Training became more sophisticated and more intense. In 1988, the division's first battalions participated in rotations at the Joint Readiness Training Center, Fort Chaffee, Arkansas. This training center provides the most realistic training available to light forces in the Army. Coupled with joint/combined training exercises Cobra Gold in Thailand, Kangaroo in Australia and Orient Shield in Japan, the division's demanding exercise schedule significantly increased the division's fighting capabilities. Until 1993 Operation Team Spirit in Korea remained the division's largest annual maneuver exercise, involving more than half of the division's strength.