 Complete the following phrase:  Crossman was commissioned a second lieutet in The Prince of Waless Own West Yorkshire Regiment on 20 February 1897, and promoted to lieutet on 4 February 1899. He served in the Second Boer War 18991902, including as staff officer to the Railway Staff officer at Frederickstad. During the war he was part of the force sent to relieve Ladysmith, taking part in the battles of Colenso December 1899, Spion Kop January 1900, Vaal Kranz and 