Even though Achilles is super strong and basically unbeatable, Spartans were born and raised to fight, so it would be no challenge fighting Trojans. They would annihilate them, haha.
I would definitely rather be a Spartan, and not only because of the Battle of Thermopylae. Mainly because of the fact that the Spartans are Greeks, and the Greeks beat the Trojans in the Trojan War.
This (question) is madness... no THIS IS SPARTAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!
Spartans, because Spartans are my favourite war soldiers in the classical era. They also defeat the Romans when the Romans was attacking the city, Sparta.