Possible spoilers here.
In the following text:
[spoiler]“But the grim-voiced fellow ran hotfoot to the Master. “The dragon is coming or I am a fool!” he cried. “Cut the bridges! To arms! To arms!”
Excerpt From: J.R.R, Tolkien. “The Hobbit.”
This material may be protected by copyright.[/spoiler]
Why did they order to cut the bridges? Smaug is a dragon and could easily fly over anyways. The only explanation I can think of is they wanted to trap the people so they would be forced to stay and fight.
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Edited by GKR: 2/15/2013 12:02:30 AMI was stumped by this for a while as well, but I forgot the paragraph that followed: [quote]Amid shrieks and wailing and the shouts of men he came over them, swept towards the bridges and was foiled! The bridge was gone, and his enemies were on an island in deep water too deep and dark and cool for his liking. If he plunged into it, a vapour and a steam would arise enough to cover all the land with a mist for days; but the lake was mightier than he, it would quench him before he could pass through.[/quote] My guess is they wanted to try and reduce Smaug's attack options by keeping him airborne. This would also keep his underbelly and chest, every dragon's weak spot, exposed.