How did the opposing forces depict each other in propaganda, and how did they depict themselves? what purpose did this serve?

Opposing forces depicted each other negatively and violently while they depicted themselves as valiant heroes; this served to gain support from civilians for the war effort at home

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.