Throughout the summer of 1990, in response to the winding down of the Cold War, 3AD was instructed to begin selective standing down of various division elements. Some units, for example the 3rd Battalion, 5th Air Defense Artillery, were turning in equipment and cross-leveling with other 3AD units when momentous events in the Middle East developed in August 1990. That month, Iraq invaded Kuwait, and soon after, President George H. W. Bush committed U.S. troops to the theater, first to defend Saudi Arabia, and then to eject Iraqi troops from Kuwait. Deployment of advance elements of 3AD began in December, with the remaining deploying units arriving by January. Units that had drawn down were replaced or augmented back to full strength. As an example, 3–5 ADA was replaced by the 8th Infantry Division's 5th Battalion, 3rd Air Defense Artillery. Other units were attached to 3AD to bring it up to, and even beyond, full strength.