I think the title of the book & film "A Bridge Too Far" says it all. It was a daring plan that would have considerably shortened the war & saved many lives if it had succeeded. It might also have changed the whole history of the post-war period if the British & American troops had reached Berlin before the Soviet troops. This must have been a big consideration in carrying it out.

My late father-in-law was with XXX Corps & he told me they ran out of fuel when they were in sight of Arnhem. They could hear the fighting going on but there was nothing they could do to help. He said it was frustrating & upsetting. They had outrun their supply lines which is the big problem with any invasion.

From what I've read on the subject the weather played its part as it so often does. The delays to the original plans caused inevitable problems. The communications problems were inexcusable but not uncommon in this type of operation, even today.

This gives a good general outline of Operation Market Garden. http://www.bbc.co.uk/history/war/wwtwo/battle_arnhem_01.shtml

I think the main problem was the lack of transport to get the troops in there. There wern't enough gliders and DC-3's to lift all the airborne troops into the area in the time needed and set by the plan.