A new book has been published in Persian (with an English section) on the structure of the Parthian army by Kaveh Farrokh (University of British Columbia-Continuing Studies) and Gholamreza Karamian (Tehran Azad University-Central Branch, History and Archaeology Department):
کاوه فرخ و غلامرضا کرمیان (۱۳۹۵). ساختار ارتش اشکانیان. تهران: خانه تاریخ و تصویر ابریشمی. Farrokh, K., & Gholamreza Karamian (2016). The Structure of the Parthian Army. Tehran: Khaneye Tarikh va Tasvire Abrishami.
The book examines the development, equipment, tactics, strengths and weaknesses of the Parthian military.
Parthian Shiva-tir (Horse Archers) engaged in discharging their missiles (Source: Ancientbattles.com).
The book is a prelude to an upcoming English-language textbook on the Parthian Army to be published by Pen & Sword Publishing in England.
The Parthian relief at Andika discovered by Dr. Gholamreza Karamian and Farzad Astaraki. The specific location of this relief is in the northern village of Darvish Ahmad that is 50 kilometers from western Andika in Khuzestan Province. The GPS position of the site is: N 32 23 32/3 and E 49 30 21/5. The dimensions of the Andika relief are 2 meters (length) by 1.20 meters (width) (Courtesy of Dr. Gholamreza Karamian and Farzad Astaraki).