In Sparta when did training for war begin?

In Sparta, training for war began at a very young age, typically around the age of seven, when boys entered the agoge, a rigorous education and training program. The agoge focused on physical fitness, combat skills, discipline, and obedience, preparing them for their roles as Spartan warriors. This training continued until they were around 20 years old, after which they would join the ranks of the Spartan army. The emphasis on military training was central to Spartan society and identity.