Frank Capra's series of 7 agitprop films during WW2 are better than thought by many. Yes, there are racial stereotypes, but it's still contains facts often lost in later docs.
I wrote of the series: 'the film series is well worth watching, not only for the obvious reasons, but for the subtle things it reveals, such as the use of the plural for terms like X millions when referring to dollars, rather than the modern singular, or the most overused graphic in the whole series- a Japanese sword piercing the center of Manchuria. Yet, it also shows the complexities of trying to apply past standards to current wars. The lesson of World War One (avoid foreign entanglements) was not applicable to World War Two, whose own lesson (act early against dictatorships) has not been applicable in the three major wars America has fought since: Korea, Vietnam, nor Iraq.'
A snippet on the series:
