 Complete the following phrase:  Neilson chose a career in the military. He joined the Cameronians Scottish Rifles before being commissioned into the Argyll and Sutherland Highlanders as a second lieutet on 1 December 1897. He was promoted to lieutet on 1 October 1899, and served in the Boer War from 1899 to 1902 taking part in the advance on Kimberley and the 