Many believe aliens have already been visiting Earth for thousands of years. There are reports by ex-military who claim that the U.S. Government has already catalogued 57 species of aliens. Some have been classified as malevolent with plans to invade Earth while others are here as observers of mankind.
I guess just like humankind if aliens exist there will be some with good intentions and others with bad.
How about they have been here for many thousands of years. We are part of them and some have come to check on us and so forth and so on. Check out Bibleufo.com.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.