Aliens have inspired some of the greatest TV series of all time, but only a few can truly be called perfect television.

The bulk of War Machine follows Ritchson’s character (known only as “81”) and a squadron of would-be Army Rangers on a training mission that goes sideways when they encounter a deadly alien ship.

Forbes contributors publish independent expert analyses and insights. I cover Hollywood and entertainment. Alien: Earth concluded its first season with its eighth episode on Sept. 23 and seven weeks ...