Retired US soldier claims he spent a 17 years on Mars battling Aliens?

Retired US soldier only known by name Captain Kaye says he spent 17 years defending 5 human colonies on Mars from Aliens who wanted to make planet their own.
He said that he served a secret space fleet called ''Earth Defense Force'' which recruited military personnel from America, China and Russia. He also stated that the spacecraft recruiting took place on the Moon and Saturn's satellite Titan and also in deep space.