The 402nd Field Artillery Brigade is an AC/RC/NG unit based at Fort Bliss, Texas. The unit is responsible for training selected United States Army Reserve & Army National Guard units along the West coast. The unit was formerly designated as 3rd Brigade, 91st Infantry Division, and as the 402nd Brigade (Training). The Brigade is a subordinate unit of the First United States Army (First Army Division West). From 1985 to 1996, the Brigade conducted artillery training at Fort Sill, Oklahoma.