The Arabs used the term “Khurasan” for Khurasan proper (the north-eastern province of modern Iran), but also more broadly to include Khwarazm, Transoxania, Seistan and modern Afghanistan. The Khurasanian leader Tahir “the ambidextrous” led the Abbasid army of Khurasan to victory in the Abbasid civil war of 810-813 and was rewarded with the governorship of Khurasan. His descendents “the Tahirids” were semi-independent but loyal Abbasid subjects. In 861, Ya’qub ibn Layth Saffar seized power in Seistan and by 873 had destroyed the Tahirids and taken over Khurasan, founding the Saffarid dynasty. The Samanids took Khurasan proper from them in 900, but the Saffarids held Seistan as Samanid and then Buyid, Ghaznavid and Seljuq vassals with considerable autonomy until 1073. The Samanids were governors of Transoxiana under the Abbasids and Tahirids, but became independent after the Tahirids fell. They came to control much of eastern Iran, Afghanistan and Central Asia, but in 999 their territory was divided between their Ghaznavid former vassals and the Qarakhanid Turks. The army’s core was a palace force of Turkish ghulams, forming a counter-balance to the Khurasanian nobles’ troops. Both had lance, bow and mail, but the ghulams are more likely to have added horse armour. What may be Khurasanian professional infantry are described in the Shah-nama of Ferdawsi. They include armoured spearmen, armoured and shielded archers and armoured javelinmen who are probably Dailami. Reference: The Great Arab Congquests H. Kennedy.
— Tahirid Army 821 AD - 873 AD
III/10 — HINDU INDIAN 545 AD - 1510 AD
III/11 — CENTRAL ASIAN TURKISH 550 AD - 1330 AD
III/16 — KHAZAR 568 AD - 1083 AD
III/43 — KHURASANIAN 821 AD - 1073 AD
III/37 — ABBASID ARAB 747 AD - 945 AD
— Saffarid Army 861 AD - 1073 AD
III/10 — HINDU INDIAN 545 AD - 1510 AD
III/11 — CENTRAL ASIAN TURKISH 550 AD - 1330 AD
III/16 — KHAZAR 568 AD - 1083 AD
III/37 — ABBASID ARAB 747 AD - 945 AD
III/38 — ARAB INDIAN 751 AD - 1206 AD
III/43 — KHURASANIAN 821 AD - 1073 AD
III/25 — ARAB CONQUEST 622 AD - 660 AD & KHAWARIJ 658 AD - 873 AD
III/38 — ARAB INDIAN 751 AD - 1206 AD
III/74 — SELJUQ TURK 1037 AD - 1276 AD
— Samanid Army 900 AD - 999 AD
III/11 — CENTRAL ASIAN TURKISH 550 AD - 1330 AD
III/16 — KHAZAR 568 AD - 1083 AD
III/38 — ARAB INDIAN 751 AD - 1206 AD
III/43 — KHURASANIAN 821 AD - 1073 AD
III/58 — BUYID OR OTHER DAILAMI DYNASTIES 927 AD - 1090 AD
III/64 — GHAZNAVID 962 AD - 1186 AD
III/11 — CENTRAL ASIAN TURKISH 550 AD - 1330 AD
III/38 — ARAB INDIAN 751 AD - 1206 AD
III/43 — KHURASANIAN 821 AD - 1073 AD
III/58 — BUYID OR OTHER DAILAMI DYNASTIES 927 AD - 1090 AD
III/64 — GHAZNAVID 962 AD - 1186 AD