"And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, and prevailed not; neither was their place found any more in heaven.And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth,and his angels were cast out with him." - Revelation 12:7-9
Many have indicated that there is actually a "war in heaven" taking place, just as the book of Revelation says, bwtween human extraterrestrials and the angellic forces, and the reptilian races and the fallen angels which possess them.
Here is basically the star systems involved in the MAIN conflict, even through there are apparently many others which are allied with these systems mentioned below which are not listed here:
THE ANDROMEDANS VS. THE DRACONIANS
THE PLEIADEANS VS. THE RIGELIANS
THE TAU CETIANS VS. THE ZETA RETICULANS
THE PROCYONESE VS. THE EPSILON BOOTEANS