OHL then shifted the attack to Champagne, to draw away the French troops who had been sent to help the British in Flanders. The German advance in the Third Battle of the Aisne was the most remarkable yet, they reached the right bank of the River Marne, only from Paris, which the French government prepared to evacuate. OHL decided that they must enlarge this salient, so they would be able to bring forward enough supplies to drive on to Paris. On part of the sector assaulted the French front line was lightly held and easily overrun but as they thrust forward the attackers unexpectedly encountered the main line of resistance, beyond the range of the German field guns, where they were stopped.