The following passage comes from The Hobbit, in the chapter “The Clouds Burst”:
The goblins gathered again in the valley. There a host of Wargs came ravening and with them came the bodyguard of Bolg, goblins of huge size with scimitars of steel. Soon actual darkness was coming into a stormy sky; while still the great bats swirled about the heads and ears of elves and men, or fastened vampire-like on the stricken. Now Bard was fighting to defend the Eastern spur, and yet giving slowly back; and the elf-lords were at bay about their king upon the southern arm, near to the watch-post on Ravenhill. Suddenly there was a great shout, and from the Gate came a trumpet call. They had forgotten Thorin!
I would especially like to know whether 'the stricken' are dead (this is what I find in two Polish translations of the text, the third one states that they are dead and wounded) or not. Maybe this expression describes a completely different state? I also wonder if it refers back to these 'elves and men' from the same sentence.