Wiart managed to move his forces over the mountains and down to Trondheimsfjord, where they were shelled by German destroyers. They had no artillery to challenge the German ships. It soon became apparent that the whole Norwegian campaign was fast becoming a failure. The naval attack on Trondheim, the reason for the Namsos landing, did not happen and his troops were exposed without guns, transport, air cover, or skis in a foot and a half of snow. They were being attacked by German ski troops, machine gunned and bombed from the air, and the German Navy was landing troops to his rear. He recommended withdrawal but was asked to hold his position for political reasons, which he did. After orders and counterorders from London, the decision to evacuate was made. However, on the date set to evacuate the troops, the ships did not appear. The next night a naval force finally arrived, led through the fog by Lord Louis Mountbatten. The transports successfully evacuated the entire force amid heavy bombardment by the Germans, resulting in the sinking of two destroyers: the French and British . Carton de Wiart arrived back at the British naval base of Scapa Flow in the Orkney Islands on 5 May 1940, his 60th birthday. Northern Ireland Carton de Wiart was posted back to the command of the 61st Division, which was soon transferred to Northern Ireland as a defence against invasion. However, following the arrival of Lieutenant-General Sir Henry Pownall as Commander-in-Chief in Northern Ireland, Carton de Wiart was told that he was too old to command a division on active duty. British military mission to Yugoslavia (1941) Advanced to temporary major-general on 28 November 1940, he remained inactive very briefly, as he was appointed as head of the British-Yugoslavian Military Mission on 5 April 1941. Hitler was preparing to invade the country and the Yugoslavs asked for British help. Carton de Wiart travelled in a Vickers Wellington bomber to Belgrade, Serbia to negotiate with the Yugoslavian government. After refuelling in Malta, the aircraft left for Cairo with enemy territory to the north and south. Both engines failed off the coast of Italian-controlled Libya, and the plane crash-landed in the sea about a mile from land. Carton de Wiart was knocked unconscious, but the cold water made him regain consciousness. When the plane broke up and sank, he and the rest aboard were forced to