Aliens reveals some important things as it relates to art and politics. Cameron was outspoken on promoting women and has since casted many female heroines. I think its consistent because feminism really took hold in the 1970s. Cameron, like every other hollywood goon, echoed this movement in his art. He's not the only one, many other directors did as well. Its not rocket science all they did was switch the male hero for a female. The feminists of that time called it "role reversal". Aliens was produced in the mid-1980s. So, I find it interesting they had this feminist agenda already laid out. Heck, how many of you recall Cpl Dietrick? She passes as a lesbo bull dyke, but, fits the a non-conforming cross dresser to a "t". How about that...1986 "trans" "gender"ism? In fact a couple short years later during the GOP convention, Pat Buchannan highlighted many of the issues we're dealing with right now, from family dissolution to females in combat arms. The movie is aptly labeled science fiction, for it is fiction and so are Cameron's ideals about female equity to males.
To wit, we can ascertain a few things, namely, where this push of females in combat came from. As we can see, this is more of a social phenomenon and even still not a very mysterious one. First, it was top - down. It was due to a confluence of Cameron-type artists that help promote certain feminists ideals, women in combat being one of them. What's relevant is that this vision, if you will, never came from the rank and file military. It also never came from the people. And that is telling. Rather it came elsewhere and from small pockets of society that are more aligned with fantasy than reality i.e. artists and academics. The military, on the other hand, has no other choice but to operate according to reality.
Females being exactly the same as males is itself a fantasy. If women were really needed and were equal to men in war then women would have already been integrated into combat arms eons ago. The current inclusive policies with women and combat arms owes itself very much to these fringes artists.