Eighteen months after open hostilities drew to a close, the battalion was deactivated in Korea on 20 January 1955.
Throughout this time frame, the battalion provided key analytical research on the development of the North Korean Army.
On 15 January 2004, after the completion of the initial invasion of Iraq, the 502nd MI BN deployed in support of Operation Iraqi Freedom II, making this its first combat campaign in 52 years.
On 11 August 2006, the 502nd MI BN deployed again to Iraq, this time in support of Operation Iraqi Freedom 06–08.
The battalion returned to Fort Lewis in October 2007, having served 15 months supporting the OIF campaign.