What happened 10 December 1943 AD

Churchill went from Cairo to Tunis, arriving on 10 December, initially as Eisenhower's guest (soon afterward, Eisenhower took over as Supreme Allied Commander of the new SHAEF just being created in London). While Churchill was in Tunis, he became seriously ill with atrial fibrillation and was forced to remain until after Christmas while a succession of specialists was drafted in to ensure his recovery. Clementine and Colville arrived to keep him company; Colville had just returned to Downing Street after more than two years in the RAF.