In that chapter I love the opening to the Dagor Bragollach.

There came a time of winter, when night was dark and without moon; and the wide plain of Ard-galen stretched dim beneath the cold stars, from the hill-forts of the Noldor to the feet of Thangorodrim. The watchfires burned low, and the guards were few; on the plain few were waking in the camps of the horsemen of Hithlum. Then suddenly Morgoth sent forth great rivers of flame that ran down swifter than Balrogs from Thangorodrim, and poured over all the plain; and the Mountains of Iron belched forth fires of many poisonous hues, and the fume of them stank upon the air, and was deadly. Thus Ard-galen perished, and fire devoured its grasses; and it became a burned and desolate waste, full of a choking dust, barren and lifeless. Thereafter its name was changed, and it was called Anfauglith, the Gasping Dust. Many charred bones had there their roofless grave; for many of the Noldor perished in that burning, who were caught by the running flame and could not fly to the hills. The heights of Dorthonion and Ered Wethrin held back the fiery torrents, but their woods upon the slopes that looked towards Angband were all kindled, and the smoke wrought confusion among the defenders. Thus began the fourth of the great battles, Dagor Bragollach, the Battle of Sudden Flame.