Answer
Xenon and Theodotus were two Spartan commanders who were stationed at Chalcis in Euboea when Molon invaded the region in 285 BC. When Molon advanced, Xenon and Theodotus retired under the shelter of the towns. This was a wise decision, as Molon was defeated by the Athenian general Chares, and Xenon and Theodotus were able to return to Chalcis without any harm.