1st Battalion, 1st Air Defense Artillery Regiment (United States)

From February 2003 to May 2003, the battalion served in support of operation Iraqi freedom. Alpha and Bravo batteries deployed to provide air defense for the Kingdom of Bahrain, while the balance of the battalion deployed to Kuwait in support of operation there.

In February 2006, the battalion was informed that they would deploy to Okinawa, Japan, to provide air defense for key assets in the Pacific region. The 1-1 Air Defense Artillery was restationed to Kadena Air Base 30 November 2006.