The first day's reports were inconclusive, but by day two the Germans knew they had broken through some of the enemy artillery lines. But the encirclement failed because British stoutness gave their V Corps time to slip out of the targeted salient. On day four, German forces moved on into open country, and the Kaiser prematurely celebrated by awarding Hindenburg the Grand Cross of the Iron Cross, a medal first created for von Blücher. As usual, Hindenburg set objectives as the situation evolved. South of the salient, the Germans had almost destroyed the British Fifth Army, so they pushed west to cut between the French and British armies. However, they advanced too slowly through the broken terrain of the former Somme battlefields and the ground devastated when withdrawing the year before, and because troops stopped to loot food and clothing, and the Allies maintained a fluid defensive line, manned by troops brought up and supplied by rail and motor transport. Hindenburg hoped the Germans would get close enough to Amiens to bombard the railways with heavy artillery, but they were stopped just short, after having advanced a maximum of . Hindenburg also hoped that civilian morale would crumble, because Paris was being shelled by naval guns mounted on rail carriages away, but he underestimated French resilience. The Allied command was dismayed. French headquarters realized: "This much became clear from the terrible adventure, that our enemies were masters of a new method of warfare. ... What was even more serious was that it was perceived that the enemy's power was due to a thing that cannot be improvised, the training of officers and men." Prolonging Michael with the drive west delayed and weakened the attack in Flanders. Again the Germans broke through, smashing the Portuguese defenders and forcing the British from all of the ground they had paid so dearly for in 1917. However, French support enabled the British to save Hazebrouck, the rail junction that was the German goal. To draw the French reserves away from Flanders, the next attack was along the Aisne River where Nivelle had attacked the year before. Their success was dazzling. The defender's front was immersed in a gas cloud fired from simple mortars. Within hours the Germans had reoccupied all the ground the French had taken by weeks of grinding, and they swept south through Champagne until they halted for resupply at the Marne