On May 4 Peng's forces attacked an isolated supply depot in northeastern Shaanxi, arrested its commander, and captured food reserves, 40,000 army uniforms, and a collection of arms that included over a million pieces of artillery. Peng's forces were pushed back to the border of Inner Mongolia but finally managed to decisively defeat Hu's forces in August, in the Battle of Shajiadian(沙家店战役), which saved Mao and other members from the Central Committee from being taken prisoner. Peng eventually pushed Kuomintang forces out of Shaanxi in February 1948.