Summarize this paragraph using evidence from the text
Wartime posters, which addressed every citizen as a
combatant in a war of production, united the power of
art with the power of advertising. Their message was
that the factory and the home were also battlefields.
Poster campaigns aimed not only to increase
productivity in factories, but to enlarge people's views
of their responsibilities in a time of Total War.
Government officials incorporated the poster medium
into their plans to convert the American economy to
all-out war production during the defense emergency
of 1941. Plant managers, company artists, paper
manufacturers, and others quickly followed suit,
creating and posting incentive images that eventually
dwarfed the efforts of the government in variety and
number.