During the Second World War, Morgan-Giles served on during the
Norwegian Campaign in 1940, escorting Atlantic convoys, and took part in the
Battle of Oran. In 1941, he was sent to the
Suez Canal, where he was in charge of the anti-magnetic mine campaign. In April of that year, he acted as a liaison with the
Royal Air Force using
Wellington bombers as torpedo bombers. During his time with
No. 201 Group RAF at
Dekheila he survived three serious aeroplane crashes (one of which he was the sole survivor). Following a period of staff training at the
Royal Naval College, Greenwich, Morgan-Giles was then sent to the Far East as Staff Officer Operations of Force W. There he accepted the Japanese surrender of
Thailand.
George Medal Morgan-Giles was awarded the
George Medal for "gallantry and undaunted devotion to duty" during bomb and mine disposal work while serving at HMS
Nile, the naval base at Ras el-Tin Point, Alexandria. Morgan-Giles had been sent to help clear the ships from the harbour as quickly as possible, because they were loaded with explosive and ammunition, and (although unknown at the time)
mustard gas. Whilst on board , helping to get move the ship out of the harbour to minimise losses, a bomb struck a nearby ammunition ship, and he was hurled the length of the deck, but was uninjured amongst the wreckage and fire. He was nevertheless able to climb onto an American
Liberty ship, SS
Lyman Abbott that was blocking the harbour exit. Once aboard, he found not a single man alive, and no power, therefore no method of weighing her anchor. He, and two other men that had joined him, were therefore forced to tamp explosive into the anchor chain, light the fuse and take cover. The explosion severed the cable, and they eventually managed to get the ship towed out of the way. It emerged after the war that
Lyman Abbott had also had
mustard gas on board. Had
Lyman Abbott been hit whilst still inside Bari's harbour, the casualties from the mustard gas would likely have been extensive. ==Post-war==