Large numbers of Xhosa were displaced across the Keiskamma by Governor Harry Smith, and these refugees supplemented the original inhabitants there, causing overpopulation and hardship.
Harry Smith also attacked and annexed the independent Orange Free State, hanging the Boer resistance leaders, and in the process alienating the Burghers of the Cape Colony.
To cover the mounting expenses he then imposed exorbitant taxes on the local people of the frontier and cut the Cape's standing forces to less than five thousand men.
[6][2] Disaffection about their treatment by the English authorities even spread among the traditionally loyal Cape Mounted Riflemen, with some units of Khoi descent defecting to the Xhosa rebels.
Similarly, on 7 January, Hermanus and his supporters launched an offensive on the town of Fort Beaufort, which was defended by a small detachment of troops and local volunteers.
The Cape Government also eventually agreed to levy a force of local gunmen (predominantly Khoi) to hold the frontier, allowing Smith to free some imperial troops for offensive action.
With fresh men and supplies, the British expelled the remainder of Hermanus' rebel forces (now under the command of Willem Uithaalder) from Fort Armstrong and drove them west toward the Amatola Mountains.
Over the coming months, increasing numbers of Imperial troops arrived, reinforcing the heavily outnumbered British and allowing Smith to lead sweeps across the frontier country.
In February 1852, the British Government decided that Sir Harry Smith's inept rule had been responsible for much of the violence, and ordered him replaced by George Cathcart, who took charge in March.