The German army returned workers to the war economy and exempted from conscription, from 1917. Steel production in February 1917 was short of expectations and explosives production was below the target, which added to the pressure on Ludendorff to retreat to the Hindenburg Line. Despite the shortfalls, by the summer of 1917, the artillery park had increased from guns and from guns, many being newer models of superior performance. Machine-gun output enabled each division to have and machine-guns and for the number of (MGA, machine-gun sharpshooter detachments) to be increased. The greater output was insufficient to equip the new divisions; existing divisions, which still had two artillery brigades with two regiments each, lost a regiment and the brigade headquarters, leaving three regiments. Against the new scales of equipment, British divisions in early 1917 had and machine-guns and the French and machine-guns.