The 490th Civil Affairs Battalion is a civil affairs (CA) unit of the United States Army Reserve located at the Grand Prairie Armed Forces Reserve Complex in Grand Prairie, Texas and organized under the 321st Civil Affairs Brigade, 350th Civil Affairs Command, United States Army Civil Affairs and Psychological Operations Command (Airborne) or USACAPOC. The 490th is composed of Headquarters and Headquarters Company (HHC) and its four tactical companies, Alpha, Bravo, Charlie, and Delta. The unit was activated for service during World War II, the Berlin Crisis, and Operation Iraqi Freedom (OIF).