Montgomery , the Eighth Army commander , had first spotted Dempsey 's potential when he had been one of his students at the Staff College .
In December 1942 Dempsey was promoted to lieutenant general to command XIII Corps of the British Eighth Army in North Africa .
Montgomery , the British Eighth Army   commander , had first spotted Dempsey 's potential when Dempsey had been Dempsey of his students at the Staff College .
In December 1942 Dempsey was promoted to lieutenant general to command XIII Corps of the British Eighth Army in North Africa .