Foch waited to strike. The genius of Foch was that he waited until the last minute of safety, taking immense risks in order to be certain of his counter-stroke. For a time he had to dissipate his reserves, but he gathered them together again. As quick as the blue men had come up behind our lines they were withdrawn again. Three of our divisions went with them, the 51st Highlanders and 15th Scottish, and the 48th English. The flower of the French army, the veterans of many battles, was massed behind the Marne, and at Château Thierry the American marines and infantry were given their first big job to do. What happened all the world knows. The Crown Prince’s army was attacked on both flanks and in the center, and was sent reeling back to escape complete annihilation.