 The Östgöta Anti-Aircraft Regiment was raised on 1 October 1939, but already a year earlier, on 1 October 1938, a preparatory organization had been formed, which was added to the eastern barracks at the twin establishment in Linköping.The barracks had originally been built in 1922 for the 2nd Life Grenadier Regiment (I 5), which was later disbanded.The first conscripts in the regiment moved in on 9 March 1939, and were distributed on four anti-aircraft batteries.