User blog comment:The Mighty Thor/Marvel Anime/@comment-4040327-20110629182803/@comment-4083966-20110701224628

Wolverine was in WW2 with Cap, however different studios own the rights to the X-Men films than the other marvel movies. Kind of explains why The First Class was able to go willy nilly on the X-Men timeline at the same time all the other Marvel movies are setting up for a crossover.