 A notable example was the "Norakuro" manga, which began pre-war as humorous episodes of anthropomorphic dogs in the army, but eventually developed into propaganda tales of military exploits against the "pigs army" on the "continent" - a thinly-veiled reference to the Second Sino-Japanese War.Cartoons were also used to create informational papers, to instruct occupied populations, and also soldiers about the countries they occupied.A form of propaganda unique to Japan was war themed Kamishibai "paper plays".