The regression of naval aviation continued. During the Spanish Civil War German aircraft—mainly Heinkel He 59 and Heinkel He 60s—sank 144 ships out of the 554 lost by the Republican forces. Before the fall of Barcelona in 1939, for example, German aircraft sank 30 ships and damaged scores more in the harbour.[12] The success of anti-shipping operations did not spur naval aviation to a place of importance.