Constituted 4 October 1955 in the Army Reserve as the 318th Public Information Field Service Detachment
Activated 11 October 1955 at Greenwood, South Carolina
Reorganized and redesignated 30 September 1958 as the 318th Public Information Detachment
Inactivated 15 October 1958 at Greenwood, South Carolina
Activated 15 July 1959 at Greenwood, South Carolina
Inactivated 30 April 1964 at Greenwoo
d, South Carolina
Redesignated 16 November 1983 as the 318th Public Affairs
Detachment and activated at Forest Park, Illinois
Ordered into active military service 5 October 2000 at Forest Park, Illinois; released from active military service in 2001 and reverted to reserve status
Ordered into active military service 27 December 2002 at Forest Park, Illinois; released from active military service 2 September 2003 and reverted to reserve status
Ordered into active military service 14 September 2009 at Forest Park, Illinois; released from active military service 18 October 2010 and reverted to reserve status
Detachment 1 ordered to active military service 10 November 2016 at Forest Park, Illinois; released from active military service 5 May 2018 and reverted to reserve status
Detachment 2 ordered to active military service 10 November 2016 at Forest Park, Illinois; released from active military service 25 September 2018
Redesignated 1 October 2018 as the 318th Theater Public Affairs Support Element and activated at Forest Park, Illinois
