Here is your sword:
''Bahram Chobin was chosen to lead an army against them. According to Shahbazi, Bahram's army consisted of 12,000 hand picked Savaran, Persia's elite soldiers. His army ambushed a large army of Turks and Hephthalites in April 588, at the battle of Hyrcanian rock, and again in 589, capturing Balkh. He then proceeded to cross the Oxus river and managed to repulse the Turkic Invasion and taking over Hephthalite territory that was occupied by the Turks.
It is reputed that an arrow shot by Bahram killed the Eastern Turkic Khagan, Bagha/Yabghu Qaghan, known as Ch'u-lo-hou by the Chinese.''
''In 606/607, the Turks invaded eastern Persia with a large number of men, but were defeated in the first battle near the fort of Tus in Khorasan by a force of 2,000 Savaran (elite heavy cavalry). Having lost this battle, the Turks and Hephthalites requested reinforcements from the Khagan. Sebeos exaggerates that 300,000 troops were sent to reinforce the invading army.
This force soon overran Khorasan as well as the fort of Tus with its 300 defenders under prince Datoyean. However, the Turks withdrew after their raids, which went as far as Isfahan. Smbat quickly reorganized the eastern Persian forces and finally crushed the Turks and Hephthalites, reportedly killing their leader in hand-to-hand combat.
After the death of their leader, which shattered troop morale, the Turks and Hephthalites retreated in a disorderly manner. The Savaran pursued them, routed them and killed many.''