Having attended the
Royal Military College, Sandhurst, d'Avigdor-Goldsmid was
commissioned into the
4th/7th Royal Dragoon Guards on 1 September 1932 as a
second lieutenant. He was promoted to
lieutenant on 1 September 1935. He was appointed
adjutant on 14 October 1937. He was promoted to
captain on 1 September 1940. As a captain (
temporary major) he participated in the
D-Day landings of the
Second World War.
lieutenant colonel on 31 December 1951, and to
colonel on 19 January 1956. He was given command of
20th Armoured Brigade in 1958. He was promoted to
brigadier on 1 January 1961. He was appointed Deputy Commander of
Aldershot Command from September 1961 to 1962. On 31 October 1962, he was granted the temporary rank of
major-general and appointed Director of the
Royal Armoured Corps. His promotion to major-general was confirmed on 1 January 1963 and back dated to 31 October 1962 with seniority from 6 April 1962. He relinquished the appointment of Director of the Royal Armoured Corps on 27 January 1965. On 28 February 1965, he was appointed President of the
Regular Commissions Board, relinquishing the position on 20 September 1965. On 1 February 1966, he was posted to the
Ministry of Defence as Director of
Territorial Army and
Cadets. He relinquished the post on 20 January 1968, the day he retired from the military. ==Later life and political career==