In the Anglo-Saxon epic poem Beowulf, Naegling is the sword of Beowulf which he brought to his fight with the dragon. At this point in the poem, Beowulf is an old man and seriously underestimated the dragon's strength. He struck the dragon's head with his sword, but it broke into two pieces. Only the bravery of his thane Wiglaf delayed the dragon long enough for Beowulf to draw his dagger and deal the killing blow. It is said that the sword didn't break because the dragon's scales were too tough, but rather Beowulf was too strong and the force of his arm strained the sword beyond the breaking point.