the 157th field artillery brigade was constituted in the organized reserve on 24 june 1921, and assigned to the 82nd division in the 4th corps area. from 14 january 1922 until 8 july 1927, the brigade was stationed in columbia, sc; it then relocated to spartanburg, sc. the brigade consisted of two 75mm gun regiments (the 319th and 320th field artillery regiments) and the 307th ammunition train. in 1929, a 155mm howitzer regiment (the 452d field artillery) was added to the brigade when the army adopted a lighter 155mm howitzer. this regiment was redesignated as the 321st field artillery in 1929, and remained with the brigade until 1941. the brigade often conducted summer training with the 13th field artillery brigade, a regular army brigade stationed at fort bragg, nc.