Legolas slays orcs with his knife when out of arrows

He knelt for a while, bent with weeping, still clasping Boromir’s hand. So it was that Legolas and Gimli found him. They came from the western slopes of the hill, silently, creeping through the trees as if they were hunting. Gimli had his axe in hand, and Legolas his long knife: all his arrows were spent. When they came into the glade they halted in amazement; and then they stood a moment with heads bowed in grief, for it seemed to them plain what had happened.

‘Alas!’ said Legolas, coming to Aragorn’s side. ‘We have hunted and slain many Orcs in the woods, but we should have been of more use here. We came when we heard the horn – but too late, it seems. I fear you have taken deadly hurt.’

The Two Towers, Book Three, Chapter 1: The Departure of Boromir.