The Pioneer Column was a force raised by Cecil Rhodes and his British South Africa Company in 1890 and used in his efforts to annex the territory of Mashonaland, later part of Zimbabwe (once Southern Rhodesia).
[1] Using this Rudd Concession (so called because Rhodes's business partner, Charles Rudd, was instrumental in securing the signature) between Rhodes' British South Africa Company (allegedly on behalf of Queen Victoria though without any official knowledge or authority) and Lobengula, he then sought and obtained a charter from the British government allowing him to act, essentially although in a limited way, with the government's consent.
Johnson's column eventually consisted of 180 civilian colonists, 62 wagons and 200 volunteers (who ultimately formed the nucleus of what became the British South Africa Police).
It proceeded north-east and then north over a distance of about 650 kilometres (400 mi) intending to terminate at an open area explored by Selous a few years earlier that he called Mount Hampden.
However, the column halted about 15 kilometres (9.3 mi) before that at a naturally flat and marshy meadow bounded by a steep rocky hill; (today's Harare Kopje) on 12 September (later celebrated as a Rhodesian public holiday).