After demonstrations to Army officers of work achieved at Mt Wilson, Goddard is requested to demonstrate his rockets at the Aberdeen Proving Ground in Maryland. The scientists and representatives of the Signal Corps, Air Service, Army Ordnance, are most impressed ('this will revolutionise warfare'). Goddard admits that his cartridge rocket concepts have been less successful and 'need further work'. The next day, Germany surrenders, World War I ends, and funding dries up. References: 17 , 377 .