25. Cancelling Operation Hush
Unfortunately for the British planners of Operation Hush, the Germans grew suspicious and launched a spoiling attack in July, 1917, that pushed the British back. When the main British attack finally came, in the Third Battle of Ypres in October of that year, it had to make an even greater advance than the planners of Operation Hush had envisioned.
First, the British had to recapture the ground taken by the Germans in July. Then, they had to continue on until they got close enough to the beaches where Operation Hush’s amphibious force were supposed to land. The British failed to advance far enough to come within striking distance of a linkup with an amphibious force landed behind German lines, so Operation Hush was cancelled.