On 7 April the skies cleared and the IX and XXIX Tactical Air Commands began to pound the remaining German defenders, strafing and bombing German troop concentrations and motorized and horse-drawn columns. The Allies were eager to get their hands on all German railway rolling stock and the U.S. pilots were banned from hitting this usual primary target, limiting the extent of Allied bombing operations. The rationing of U.S. artillery ammunition had been lifted and U.S. artillery in support of XVI Corps fired 259,061 rounds in 14 days.