The General Production Division (GPD), one of the few divisions to remain in place throughout the war, undertook technical work under Edwin Embleton. The GPD often produced work in as little as a week or a fortnight, when normal commercial practice was three months. Artists were not in a reserved occupation and were liable for call up for military service along with everyone else. Many were recalled from the services to work for the Ministry in 1942, a year in which £4 million was spent on publicity, approximately a third more than in 1941. £120,000 of this was spent on posters, art and exhibitions. Of the many officially employed war artists, several, including Eric Kennington, Paul Nash and William Rothenstein, were war artists during both World Wars. Many extra designs were prepared to cope with short lead-times and the changing events of war. Through the Home intelligence Division, the MOI collected reactions to general wartime morale and, in some cases, specifically to publicity produced.