Originally Posted by SnnY
I think you are wrong.
See, Weyland-Yutani are the ones trying to bring back eggs, but the colonial marines are a collaboration, as far as I know (from what people say in the movies, from the comics, from the games, and from t'interweb) the United States Marines, in the second Alien movie are employed by an alliance of Corporations/States (it seems one is pretty much the same as the other in the Alien universe) including W-Y (the united states could be the colonies tho'), they are employed to protect the Colonists (as you say) from whatever, whereas the W-Y people are trying to get the aliens instead.
Supposedly there aren't any nations left, as we know them.
In the fourth movie it appears to have shifted, I think they are saying something about W-Y being gone, and I dunno' if the army there are even corporate troops, or if the corporations have merged or something to one big government/state.
(Of course, this may be something that has grown out of the merchandise over the years, I dunno' how much of the background was established at the time of the second movie. But what I wrote above is supposedly the story today.)