The Andalite-Yeerk War (alternatively Yeerk-Andalite War) is a generic term applied to the war between the Yeerks and the Andalites. The war began in the Earth year 1966. The Andalites, under the command of Prince Seerow, had encountered the Yeerks on their homeworld. Prince Seerow felt sorry for them because they were an intelligent yet backwards race. He taught the Yeerks about science, technology, and even helped them to build portable Kandrona generators. Once they had this knowledge, the Yeerks betrayed Prince Seerow, attacking the Andalites on the Yeerk homeworld and escaping into space. The Yeerks intended to expand their empire by conquering and enslaving races across the galaxy. The Andalites, to undo the sin of Seerow's Kindness, went to war with the Yeerks, intent on stopping th