[6] On 24 May 1927 he was appointed adjutant to the Divisional Engineers of the 49th (West Riding) Division, Territorial Army, with the temporary rank of captain (with pay and allowances of a lieutenant).

[11] On 8 July 1943 he received a mention in despatches in recognition of his "gallant and distinguished services" in the Madagascar campaign of 1942.

[12] By then he was serving on the staff at Middle East Command, first as Assistant Quartermaster-General, then as Deputy Director of Military Training.

[13] In September 1944 Benjamin was appointed commanding officer of the Jewish Brigade, a 5,000-man volunteer brigade group, overseeing its training in Egypt, and eventual deployment to the Eighth Army in Italy, seeing action in the crossing of the Senio river in north-east Italy in March and April 1945.

Following V-E Day, 8 May 1945, the Jewish Brigade was sent to Tarvisio on the Italian-Austrian-Yugoslav border,[14] where Benjamin was promoted to lieutenant colonel on 1 June 1945,[15] backdated to 13 May.