 Complete the following phrase:  Roberts attended the Royal Military Academy, Woolwich, the British Armys officer training centre for the technical corps. He received a commission as a second lieutet in the Royal Engineers on 26 August 1916. He took part in the 1917 Palestine campaign and fought on the Western Front in 19171918. He was promoted to lieutet in February 1918. After the war, in 1919 he took part in the 