This paper argues that Ultra intelligence available should have warned Allied commanders of the risks involved in going through with Operation Market Garden, the parachute landings planned as the "airborne carpet" for XXX Corps in the advance to the River Rhine. The author points out clearly that although intelligence was available, it was often not passed to the land force commanders, among them Montgomery, whose earlier reliance on Ultra had won him battles. This is an interesting paper which supports its argument well, and is a welcome addition to the papers already published by MLRS on this operation. It is possible that the intyelligence was actually ignored.