Bashi-bazouk camp. These were Irregular soldiers of the Ottoman Army. They made quite an impression to Europeans and were often noted in diaries etc.
Download for free the 1857 book 12 months with the Bashi-Bazouks by Edward Money.
There was a British BB unit called Beatson's Horse. Money writer of the above book was in this unit. Explorer Richard Burton was on the staff of this unit.