Because power was everything and they be live military was best starage
The Spartans were renown for their military discipline , courage in battle and their devotion to the military arts .
because so the Spartans will help military service to be stronger. Also for protection maybey they will die easier than the Spartans
The military
Because the leaders thought that a military society created more obedient and loyal citizens
The Spartans did not have military government. They had a council of elders (ephors) and a popular assembly, at which all Spartan citizens could attend and vote.
They were trained in military activities.
phalanx
so they would have the advantage in war.
Spartans
Not Sure
Spartans, ODST are normal humans but are pretty strong. Spartans however are trained for military at 7 years old and are biologically made to be super-soldiers.
so they would have the advantage in war.