On 16 April 1987, the 2nd Infantry Brigade (Provisional) of the 5th Infantry Division was organized pursuant to General Order Number 115, H5ID, PA dated 21 April 1987. Shortly after its activation, the Brigade was deactivated and its personnel and equipment were absorbed by the 3rd Infantry Brigade (Separate) and became the nucleus of the 7th Infantry Division.
Two months later, the 2nd Infantry Brigade was reactivated pursuant to General Order Number 240, HPA dated 15 June 1987. On 16 April 1988, the 2nd Infantry Brigade was redesignated as the 502nd Infantry Brigade, 5th Infantry Division, PA pursuant to General Order 119, HPA dated 16 April 1988. The Brigade was deployed in Linglingay, Gamu, Isabela from 26 January 1988 until its transfer to Brgy Villaros, Bagabag, Nueva Vizcaya on 26 March 1988.