in the first poster the porpaganda they use is flag waving, and demonizing the enemy/ the first thing that catches your attention is the white house being blown up by rockets, and something that indicates that it is written in japanese and also the american flag is carved out like japan. its probably for americans  to make them more scared of japan or it could be intended for the japanese because it probably some kind of motivation for the japanese. this poster was most likely made during ww11 because thats when japan and america had bad relations and had a war.