As the highest point in that region and the easternmost hill of Andram, which was standing alone, it had tremendous strategic importance, because it guarded the eastern passage around the Long Wall of the Andram into the southern parts of Beleriand and the northern Taur-im-Duinath. It was here that Denethor of the Nandor met his end in the First Battle, and much later, Caranthir fortified it to guard his escape into the south after the Dagor Bragollach and The Feanoreans withdrew there after Nirnaeth Arnoediad.
amon "hill" + ereb "isolated, lonely") was the broad, shallow-sided hill that dominated the southern plains of East Beleriand.
As the highest point in that region and the easternmost hill of Andram, which was standing alone, it had tremendous strategic importance, because it guarded the eastern passage around the Long Wall of the Andram into the southern parts of Beleriand and the northern Taur-im-Duinath.
It was here that Denethor of the Nandor met his end in the First Battle, and much later, Caranthir fortified it to guard his escape into the south after the Dagor Bragollach and The Feanoreans withdrew there after Nirnaeth Arnoediad.
Sons of Fëanor, Himring, AmonEreb, Hithlum, Falas, Edain, Gondolin, Belegost, Nargothrond
Under Maedhros in the east were gathered the remainder of the sons of Fëanor, the Elves and Men of Himring under Maedhros and Bor, and the men of AmonEreb under Caranthir and Ulfang.
Under Fingon in the west were gathered the Elves and Men of Hithlum, the Elves of the Falas, the Haladin of Brethil and the companies sent from Nargothrond and the two elves of Doriath, Beleg and Mablung.