Just remember anything coming out of Hollywood about the war is anti-war. I never saw Band of Brothers because I refuse to watch anything that has anything to do with Spielburg. I heard he is planning the Pacific theatre version of B of B, will avoid that also.
Band of Brothers was really well done and had no perceptible political bias, IMO.
Whatever Spielburg's personal views, I haven't really seen those views in any of his movies. I think, when he makes films, he tends to put his politics aside and focuses on making a good movie.