In 1984 requirements changed again, prompting the reactivation of the 29th Infantry Division as a new, streamlined "Light" Infantry Division, ready to meet the demands of an ever-changing national defense, now and into the 21st century. The division was reactivated on 5 Oct 1985, and included the 115th and other historic regiments from Maryland and Virginia. As part of this reactivation, the 58th Infantry Brigade became the 3rd Brigade, 29th Infantry Division. Elements of the brigade included the 1st and 2nd Battalions, 115th Infantry.