The Safavid era also saw the mass integration of hundreds of thousands of ethnic Caucasians, notably Circassians, Georgians, Armenians, and other peoples of the Caucasus in Persian society, starting with the era of Shah Tahmasp I, and which would last all the way till the Qajar era. Originally only deployed for being fierce warriors and having beautiful women, this policy was notably significantly expanded under Shah Abbas I, who would use them as a complete new layer in Persian society, most notably to crush the power of the feudal Qizilbash. Under Abbas' own reign, some 200,000 Georgians, tens of thousands of Circassians, and 300,000 Armenians were deported to Iran. Many of them were, as above mentioned, put in the ghilman corps, but the larger masses were deployed in the regular armies, the civil administration, royal household, but also as labourers, farmers, and craftsmen. Many notorious Iranian generals and commanders were of Caucasian ancestry. Many of their descendants linger forth in Iran as the Iranian Georgians, Iranian Circassians, and Iranian Armenians (see Peoples of the Caucasus in Iran), and many millions of Iranians are estimated to have Caucasian ancestry as a following of this.