Complex sentence: Rudolf Ehrenberg changed his name to Ralph Warren Victor Elliott on 12 May 1943, and after officer training at Sandhurst he was awarded the Sword of Honour (actually a medallion because of wartime shortages).
Split into simpler sentences: Rudolf Ehrenberg changed his name to Ralph Warren Victor Elliott on 12 May 1943. After officer training at Sandhurst he was awarded the Sword of Honour (actually a medallion because of wartime shortages).