The Bechuanaland Expedition or Warren Expedition, of late 1884/1885, was a British military expedition to Bechuanaland, to assert British sovereignty in the face of encroachments from Germany, the Transvaal and to suppress the Boer freebooter states of Stellaland and Goshen. Scottish missionary John Mackenzie (1835–99), who accompanied Warren, described his experiences with the expedition in an 1887 work, Austral Africa: Losing It or Ruling It.