Utter drivel.
I have watched an interview with George Lucas on one of the DVDs and none of this is even alluded to. He chose the “Cold” Black and white, and grey colours of the badies and contrasted them with the “warmer” colours of the goodies.
Not only that he changed the story many times. Tattoine is an area of Tunesia where he filmed the desert scenes, he liked the name and changed the planets name. Likewise Leia is a local Princess/high born of the region steeped in myth. This was not the only name change, Alderan also came from this area. The rank of MOFF (as in Grand Moff Tarkin (the guy who gives the order to destroy Alderan and is sort of Vaders freind and superior)) also comes from a native rank of chief or similar.
The Ewoks were going to be like the Wookies, but he liked them so much he decided a Wookie had to have a more prominent role. Hence the human co-pilot/mate of Han Solo was binned and replaced. And as he says himself, he cut the Wookie in half to become the Ewok.
About the only thing maybe borrowed from WW2 would be the very Nazi like pageantry of the Empire, including the dispatching of the clones to the Imperial March under the gaze of Palpatine at the end of episode 2(?).
Maybe the Death Star was a representation of the World shattering capabilities of Nuclear weapons, but AT-ATs as Russian tanks? Why would order 66, which entailled the gunning down of many Jedi in cold blood have a similarity with the assignation of Hitler? The sound bites were not from B-17 bombers, they were on the cutting edge of sound technology in the 1970s, the whole film used many new techniques.
Sorry, but I can’t see any similarity with any tank, of any time in this vehicle.
In all utter tonk.
Basically George Lucas is an amazing story teller and film director, he may well have used many sources to make these films as accurate as he can, but it is not in total based on any particular war/scenario from real life.
And like Man of Stoat says, he has made the facts fit his conclusion. Look at the list of people missed out of the story ie Monty, Chamberlin and other important people.
The books also are written by people other that George, and in some cases have glaring differences to the films. For example in one book I have read Luke Skywalker finds his mother in a secretive cult sort of place. Hidden away and dedicated to pacifisim as befits Leia and her beliefs and the planet she was brought up in. In Episode 3, she is dead. how does that work?
In brief the guy is a loon.