In 1939, against the looming threat of a new war with Germany, Belgium once again resurrected its navy as the "Naval Corps". This new navy, consisting mostly of small patrol vessels and coastal artillery units, lasted barely a year until the German invasion of May 1940. During the 18 days campaign, the trawler A4 evacuated much of the government's gold reserve to Britain, while several others helped at the Allied evacuation at Dunkirk.