Ancient Arms Race: Antiquity's Largest Fortresses and Sasanian Military Networks of Northern Iran

Which ancient army boasted the largest fortifications, and how did the competitive build-up of military capabilities shape world history? Few realise that imperial Rome had a serious competitor in Late Antiquity. Late Roman legionary bases, normally no larger than 5ha, were dwarfed by Sasanian fortresses, often covering 40ha, sometimes even 125-175ha. The latter did not necessarily house permanent garrisons but sheltered large armies temporarily – perhaps numbering 10-50,000 men each. Even Roman camps and fortresses of the Early and High Empire did not reach the dimensions of their later Persian counterparts. The longest fort-lined wall of the late antique world was also Persian. Persia built up, between the fourth and sixth centuries AD, the most massive military infrastructure of any ancient or medieval Near Eastern empire – if not the ancient and medieval world. Much of the known defensive network was directed against Persia’s powerful neighbours in the north...
Jebrael Nokandeh is Director of the National Museum of Iran, Tehran, and Research Fellow at the Research Institute of Cultural Heritage and Tourism.
Hamid Omrani Rekavandi is Director of the Great Gorgan Wall Cultural Heritage Base.