False Fatherland (aka Spartan Planet) (1968) is a science fiction novel by Australian writer A. Bertram Chandler.
[1] It forms part of the author's Rim World series, featuring the recurring character, John Grimes.
Lt Commander Grimes arrives on the long-lost planet of Sparta where humans have modeled their society on the city-state of the same name in ancient Greece.
The inhabitants of the planet are confused by the female members of Grimes's crew and the arrival of his spaceship has profound and lasting effects on the Spartan society.
Writing in Luna Monthly reviewer Jan Slavin described the book as "a fairly good adventure novel" that might "make light reading some dull evening.