No Living Man

[Halbarad]

Just to address Hot and Crispy's statement which, strangely, no-one bothered to do

Same kind of sword, same race of hobbit, different results. Frodo probably missed...

After Weathertop, Aragorn found something:

'Look!' he cried; and stooping he lifted from the ground a black cloak that had lain there hidden by the darkness. A foot above the lower hem there was a slash. 'This was the stroke of Frodo's sword,' he said. 'The only hurt that it did his enemy, I fear...'

Frodo did strike at the feet of his enemy, but he definitely missed. Probably had his eyes closed, or his stroke went astray when he hit the ground.