During the preparations for the Battle of Jutland, Allingham was ordered to join the naval trawler HMT Kingfisher. Allingham’s responsibilities included helping to launch this aircraft. Although the Kingfisher was not directly involved in the battle, Allingham still rightfully claimed to be the last known survivor of that battle and could recall “seeing shells ricocheting across the sea.” In September 1917, Allingham, by then an Air Mechanic First Class, was posted to the Western Front. On 3 November 1917, he was posted to the aircraft depot at Dunkirk, France, where he remained for the rest of the war, on aircraft repair and recovery duties. He recalls being bombed from the air and shelled from both the land and the sea.