Having opened the way to the city – the first major Axis prize to fall in the whole of the war so far – Wimberley's achievement went virtually unrecognised by Montgomery, who accused him of "dilatoriness". Wimberley forgave all during the Battle of Medenine, however, when he wrote, "I felt grateful, and thought, again, what a wonderful little commander I was serving under, in Monty." Shortly after the capture of Tripli, Wimberley's division was visited by Winston Churchill, the British Prime Minister, and General Alan Brooke, now the Chief of the Imperial General Staff (CIGS), who, like Montgomery, had formerly been one of Wimberley's Staff College instructors. On 4 February 1943, when Churchill and Brooke arrived, Wimberley ordered a composite brigade of the 51st Division, all of whom were wearing kilts and were led by the massed pipers, to march past the Prime Minister and CIGS. Both men were moved to tears by the encounter. Brooke wrote in his diary later that night about the encounter:   The campaign in Tunisia came to an end on 13 May 1943, with the Allies capturing nearly 250,000 Axis soldiers, although Wimberley and the 51st Division was, by this time, in Algeria resting after six months of combat, absorbing reinforcements, and, later, training in combined operations in preparation for the Allied invasion of Sicily. On 24 June 1943 Wimberley was mentioned in despatches for his services in North Africa. In July 1943 Wimberley led the 51st Division, again serving under Leese's XXX Corps, during the Allied invasion of Sicily (codenamed Operation Husky). At this time, all three of Wimberley's brigades were commanded by future general officers, the 152nd by Gordon MacMillan, the 153rd by Horatius Murray and the 154th by Tom Rennie. The division was involved in heavy fighting until gradually being relieved in August by the 78th Infantry Division. Despite the renowned fighting ability and reputation of the 51st, Montgomery decided after the campaign in Sicily in August 1943 that Wimberley, although Montgomery admired him greatly, was showing tiredness after over two years in command, and should be removed from his command and replaced. This he did, and Wimberley was replaced by Major-General Charles Bullen-Smith, of the King's Own Scottish Borderers, who had been GOC of the 15th (Scottish) Infantry Division, another TA formation.