[1] The 223rd Military Intelligence Battalion was constituted on 1 June 1991 in the California Army National Guard, and organized and Federally recognized with its headquarters at Fort Funston in San Francisco on 16 January 1992.

The battalion was ordered to active duty on 10 February 2003 for the 2003 invasion of Iraq, attached to the 205th Military Intelligence Brigade.

[6] On Monday, 23 March 2020, the battalion was shifted to support food packing and distribution operations at Second Harvest of Silicon Valley in San Jose.

[9][10][11][8][12] As part of the 300th Military Intelligence Brigade, the battalion rotates the duty of hosting the brigade-level Exercise Panther Strike which it did last in 2014 and 2019.

D Company, thousands of miles from the rest of the battalion on the West Coast, is administered for local purposes by the 151st Regional Support Group, Massachusetts ANG.