On 13 June, the RAF made a maximum effort to help the French armies that had been broken through on the Marne. The Germans were across the Seine in the west and the French armies near Paris fell back, isolating the Tenth Army on the Channel coast. The German advance threatened the airfields of the AASF, which was ordered to retreat towards Nantes or Bordeaux, while supporting the French armies for as long as they kept fighting. The AASF flew armed reconnaissance sorties over the Seine from dawn and German columns were attacked by a force of then a second formation of followed by On the Marne, attacked a concentration of German troops and tanks, followed by an attack by which lost six aircraft and then a third attack by from Bomber Command, that lost another four. RAF attacks continued through the night, with over the Seine, of Paris, the Marne and road and rail communications and woods reported by the French to be full of German troops. Fighter sorties had been hampered by bad weather and were limited to coastal patrols.