The operation was to secure the capturing of the Bridges across the rivers. It failed largely because the Allies (Mostly British HQ) failed to see that the Germans had large forces in the areas, even though the Dutch resistance had told them pretty clearly.
Sad extra: The operations scapegoat eventually became the Polish paratroopers. Totally undeserved, yet the British persisted. Queen Wilhelmina wanted to give the Polish brigade a military decoration for their role in the liberation, but because they had become scapegoats, the British interfered - If the Polish got a medal, that meant that the British couldn't keep up their story of how the Poles had caused the operation to fail. The medal was eventually given the Polish unit that had the original brigade as its heritage - In 2005.
