Get rid of your chauvanism and do some research. Ask any Brohi or Baloch where the Khan of Kalat’s family comes from. The Baloch will reluctantly admit that they are really Brohis.
Go read the book “History of Pathans” by Brigadier(r) Haroon Rashid (a Pakhtun from Kohat). That will relate some wars that the Brohi chieftains waged on Baloch, Pashtuns and Sindhi tribes in order to subdue them. Brig. Haroon is not necessarily a good historian and has his bias for Pathans. But still he admits the defeats that were inflicted on Pashtons by the Brohi chieftains.
Don’t read history from Pakistani text books are totally biased fairy tales. There is no such thing as “warrior race”. This was a myth created by British after 1857 war. During Mughals dynasty Indian Rajputs were used by Mughals even as far upto Kabul.
Here are some references to Brohi origin of Mir Nasir Khan Kambarani I. The first Khan of Kalat or Wali of Kalat.
The cyclopædia of India and of eastern and southern Asia …, Volume 2 1885
"Kalat town, in lat, 29° N., and long. 06° 40’ E., is the capital of Baluchistan. It is 7000 feet above the sea, in a narrow valley, with the hills of Cutch Gandava on its east. Its soils are rich, and it has one permanent stream, with several of the karez aqueducts. Kalat district is the principal district of the Brahui race. The town was taken by storm by the British Indian army on the 13th November 1839, from the northern or Mustung gate. The population consists of the dominant Brahui, and of Baluch, Dehwar, Babi, Afghans, Ghilzae, and slaves. The miri or citadel has the palace of the khan. The Babi suburb is on the south side; Brahui, Ghilzae, Afghans, and others dwell in the Past-i-Shahr, and Afghans are in all the suburbs. The number of the inhabitants has been stated at 12,000, and that of its houses at 800. The Ahmadzai branch of the Kamburani is the section of the Brahui to which the Khan of Kalat belongs. "
The Statesman’s year-book, Volume 39 … 1902
"The powers of Khan of Kalat was founded in 17th century by a hill chief named Kumbar.. his successor gradually made themselves supreme from Kalat to the Arabian Sea, and about 1740 Abdulla Khan, the fourth Brahui Khan of Kalat, was acknowledged as chief of Baluchistan by Nadir Shah Afshar. "
http://www.lmp.ucla.edu/Profile.aspx?LangID=207&menu=004
“Brahui is the earliest offshoot of Dravidian and its speakers have remained in their present location for several thousands of years (Andronov 2001). At the time of the Dravidian migration (roughly 3-4,000 BC) when other tribes moved south and southeast, the Brahuis remained in place, thus breaking with their kinsfolk. The Brahuis were subject to numerous waves of foreign invaders who influenced various aspects of their culture, such as language and religion. Over the last few centuries, the survival of the Brahui ethnicity became jeopardized. Many members began renouncing their language and culture, identifying instead with the nearby Baluchi. However, after 1947, political changes in Pakistan stimulated the resurgence of the Brahui language and culture”
Most of the Baloch and Pashtun tribes came towards East being pushed by Aggressive Turkic and Mongol tribes from the North and West. Just like the Afghans muhajireen came to Pakistan when Russians invaded from the North.