Brigadier Sir Edgar Trevor Williams was a British historian and Army military intelligence officer who played a significant role in the Second Battle of El Alamein in the Second World War. He was one of the few officers who was privy to the Ultra secret, and served on the staff of Field Marshal Sir Bernard Montgomery as his intelligence officer for the rest of the war.
Edgar Williams
Major-General Sir Francis Wilfred "Freddie" de Guingand, was a British Army officer who served as Field Marshal Sir Bernard Montgomery's chief of staff from the Second Battle of El Alamein until the end of the Second World War. He played an important diplomatic role in sustaining relations between the notoriously difficult Montgomery and his peers and superiors.
Freddie de Guingand
De Guingand outside Montgomery's caravan in Tripoli
The British commanders of Operation Husky planning their operations in Malta, left to right: de Guingand; Air Commodore Claude Pelly; Air Vice Marshal Harry Broadhurst; General Sir Bernard Montgomery; and Admiral Sir Bertram Ramsay.
General Sir Bernard Montgomery with his senior officers at Eighth Army Headquarters at Vasto, shortly before handing over command of the Eighth Army to prepare for the Normandy invasion in England. Left to right: de Guingand, Air Vice Marshal Harry Broadhurst, Montgomery, Lieutenant-Generals Bernard Freyberg, Charles Walter Allfrey and Miles Dempsey