We are Greece's famous warrior sons. Famed in the movie 300 we we are reknown warriors learning to fight from birth. Our code is "With it or on it!" We are very pius and missed the Battle at marathon because we had a relegious festival.

Spartans are the correct answer. They were famous warriors trained from birth, depicted in the movie '300'. The phrase 'With it or on it' refers to their shield - meaning return with it or die on it. They were indeed very religious and missed the Battle of Marathon due to a religious festival. The misspellings ('reknown' instead of renowned, 'relegious' instead of religious, 'Corithians' instead of Corinthians) don't affect the answer.