Aran tribe - Aranzoku

…Continuing their advance westward, they reached the borders of the Roman Empire, where they also came into contact with the Goths and Germanic tribes, introducing the tactics of heavy cavalry to them. Around the 1st century AD, the Alans formed a powerful nation from among the eastern forces of the Sarmatians, and advanced into the territory of the Roman Empire, often posing a threat and hastening the downfall of the empire. In the 4th century AD, they were destroyed by the Huns, who were advancing westward. …

*Some of the terminology that refers to the "Aran people" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…さらに西進をつづけローマ帝国の国境に到達し，またゴート族やゲルマン族とも接して重装騎兵の戦術を伝えた。後1世紀ころ，サルマート人の東方勢力のなかからアラン族が強大な国家を形成し，ローマ帝国領に進出し，しばしば脅威を与え，帝国の滅亡を早めた。4世紀にいたり，西進するフン族によって滅亡させられた。…

※「アラン族」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報