Lancaster R5868, known as "S for Sugar," achieved a historic milestone as the first RAF heavy bomber to successfully undertake 100 operational sorties. Initially, "S for Sugar" served valiantly with 83 Squadron, completing an impressive 79 operational sorties. However, in November 1943, she was reassigned to 467 Squadron RAAF (Royal Australian Air Force), and her designation was changed to PO-S, signifying "S for Sugar."

On the evening of May 11th, 1944, "S for Sugar" etched her name in history during the bombing of the military camp at Bourg Leopold in Belgium, marking her momentous 100th operation. Throughout her distinguished service, she flew a remarkable total of 137 operational sorties. Her final mission took place on April 23rd, 1945, when she targeted the railway yards at Flensburg, Germany.