Gender blog has written a two part series here and here concerning women in combat and the change of role for Susan in the lastest Narnia movie. Andrew Adamson, director of Prince Caspian, believed that C. S. Lewis’ view of women had “evolved” over his lifetime and in his books. Rather, it is probably that Adamson’s views are different from Lewis, more in line with the culture, and so not in keeping with biblical complementarity. The two part article contains a good discussion on women in combat.
Also, here is a great review of Prince Caspian from Devin Brown, a C. S. Lewis scholar.