At-Tabari estimates the invading West Turkic
army at 300 thousand men and about 200 war
elephants (Nöldeke-Tabari, 1879: 269).
Ferdowsi, writing later, assures that the army
consisted of over 400,000 men and 1,200
elephants (Ferdowsi, 1989: 250). At-Tabari is
probably right, given that the Western Turks
attacked Persia not to plunder but to destroy it.
At-Tabari gives data about sending a message to
Ormizd Türkzade by Yang-Soukh-tegin. The
special envoy brought the following words to the
Shahinshah:
Fix bridges over streams and rivers so that I could
enter your country using them, and build bridges
over the rivers that do not have them. Do the
same with the rivers and streams through which
my road leads from your country to the Rumians
(Romans - V. M.) since I intend to pass to them
through your country (Nöldeke-Tabari, 1879:
268).
Gumilev believed that “the text of the ultimatum
shows both the true purpose of the campaign and
the coordination of actions of the Western Turks
and Greeks”. We fully agree with the opinion of
Gumilev (Gumilev, 1961) and who supported
him, honoring their talents as interpreters. Prior
to Gumilev, none of the researchers, despite the
abundance of indications by Ferdowsi and at-
Tabari, dared to interpret Yang-Soukh-tegin’s
appeal (Ferdowsi, 1989: 250) as a desire, first of
all, to conquer Persia. Scholars assessed this
action as another “barbarian” raid, and the
descriptions of later Persian historians were
considered “typical exaggerations” (Chavannes,
1900: 242-243; Semenov, 2015: 284-286). It
seems to us that such a viewpoint is outdated, and
the available data allow us to determine the goals
and intentions of the Western Turks. Firstly,
Yang-Soukh-tegin wanted to destroy the reserves
of the Sasanian army, not involved in repulsing
Byzantine attacks, and, secondly, the Turks were
eager to reach the line of contact with the
Byzantines (Ferdowsi, 1989: 250). In case of
success of the campaign, Persia would quite
reasonably cease to exist (at least in its Sassanid
format – from the Caspian Sea to the Persian
Gulf). Such success could only be guaranteed by
the large number of invading troops.
Consequently, the contingent of 300,000 people
is not a fiction, but a calculation of all the
resources used by the Turks (cavalry, auxiliary
infantry forces, service of war elephants,
technical personnel and rear service; we consider
possible participation of some Sui and Eastern
Turkic units that remained in Bukhara and
Paikend since the campaign against Apa Khan
(Narshakhi, 1897: 12-13).
The intervention of the contingents of Yang-
Sawh-tegin turned the nearly seventy thousand
Iranian troops concentrated in the northeastern
part of the country into a rout. A few battles were
enough for the Turks to break the resistance of
Iranian outposts and seize several strategic roads
along the trade route. A free passage to Khorasan
(to the west) and Tokharistan (to the east) opened
before Yang-Sawh-tegin. His forces divided,
slowly moving forward. The vanguard of the
army moved into Khorasan, where the leading
troops planned to capture the fortified cities of
Herat and Balkh (Nöldeke-Tabari, 1879: 269).
In response to the daring letter of Yang-Soukh-
tegin, Ormizd Türkzade sent to the Bukhara
Khan his envoy named Khurrad Burzin. This
intelligence agent was obliged to make every
effort to detach the khan with a small force from
the main army and lure him into a trap prepared
by Bahram Chubin in one of the Khorasan
gorges. Probably, Khurrad Burzin tried not only
to stall the time by fictitious negotiations on
peace, but also tried to pretend to be a personal
enemy of the Shahinshah. Relatively quickly he
won the trust of the Bukhara Khan and even
moved freely in the Turkic military camp. In the
end, having successfully accomplished the
mission assigned to him, Khurrad Burzin escaped
unhindered (Ferdowsi, 1989: 264-265).
Yang-Soukh-tegin, guided by the advice of the
“defector” Burzin, took only a 20,000-strong
detachment of cavalry with him and moved
directly to Herat along the course of the Gerirud
River. It seems likely that Yang-Soukh-tegin
wanted to capture the powerful Herat fortress as
soon as possible, setting up his headquarters
there and waiting for the main forces. When he
reached Herat, Bahram Chubin’s corps was
already standing in the way of the Turks, while a
narrow mountain gorge loomed behind. The
place for the battle seemed extremely
unfavorable and Bukhara khan made another
attempt to negotiate with the potential “enemy”
of the Shahinshah (Ferdowsi, 1989: 266-268).
Yang-Soukh sent messengers to Chubin with an
offer of the title of Iranian ruler and, which is
characteristic for understanding the essence of
the Turkic invasion, “a second place beside
himself” (Ferdowsi, 1989: 270).
According to Ferdowsi, not all Persian
commanders supported Chubin’s ultimate
decision to enter the battle (Ferdowsi, 1989: 272-
273). The very same Hurrad Burzin, who was a
personal spy of Ormizd Türkzadeh, encouraged
Chubin to accept the tempting offers of the
Bukhara khan (Nöldeke-Tabari, 1879: 271). It