On April 29, 1918 the German offensive code named Operation Georgette ground to a halt. It had come tantalizingly close, fifteen miles, of the Channel ports of Boulogne, Dunkirk and Calais. The situation became so critical that on April 11 Field Marshal Douglas Haig issued his famous Backs to the Wall order:
Three weeks ago to-day the enemy began his terrific attacks against us on a fifty-mile front. His objects are to separate us from the French, to take the Channel Ports and destroy the British Army.
In spite of throwing already 106 Divisions into the battle and enduring the most reckless sacrifice of human life, he has as yet made little progress towards his goals.
We owe this to the determined fighting and self-sacrifice of our troops. Words fail me to express the admiration which I feel for the splendid resistance offered by all ranks of our Army under the most trying circumstances.
Many amongst us now are tired. To those I would say that Victory will belong to the side which holds out the longest. The French Army is moving rapidly and in great force to our support.
There is no other course open to us but to fight it out. Every position must be held to the last man: there must be no retirement. With our backs to the wall and believing in the justice of our cause each one of us must fight on to the end. The safety of our homes and the Freedom of mankind alike depend upon the conduct of each one of us at this critical moment.
(Signed) D. Haig F.M.
British Armies in France
Tuesday, April 11th, 1918
The British were saved by logistical problems that plagued the German offensive, and heavy counter-attacks by British, Anzac and French troops. The Germans had more offensives in 1918, but they had just lost their best chance for victory, and, each day, thousands of American troops were landing in France.