It was a Greek force, of which the Spartans were a small component. The Thermopylai Pass defence was turned by an outflanking move through the mountains. Given early advice of this, the Spartan king sent his allies off early to seek protection in friendly city walls so that they would not be ridden down by cavalry in open country when it broke through. He continued to hold the pass with his remaining small force to let them get away and, now facing attack from the rear as well, was simply overwhelmed.
none
battle of thermopylae
No. The monument on which their names were supposedly inscribed is lost to time. Few we know of from Herodotus are Leonidas son of Anaxandridas II, Dienekes, Alpheios and Maron sons of Orsiphantos, Eurystos,and Aristodemos who is supposedly the only Spartan hoplite(not helot/slave,many of them survived) who survived the battle of Thermopylae.
It is estimated that there were three-hundred Spartan Hoplites who died in the defense of the pass at Thermopylae .
100s of Spartans were killed in many places, but the question probably refers to the Battle of Thermopylae in 480 BC, and the legend of the 300 Spartans.
300 Spartans heavy infantry and 2,100 light infantry.
It was roughly 300 Spartans - King Leonidas I and his personal bodyguards.
20,000.
One , notably Ephialtes .
It was 480 BCE.
about 20,000 Persians and 4000 Greeks.
"Halo Reference" Well, most of the U.N.S.C. Spartans were killed in the battle to save Reach from being destroyed (even thought they were unsuccessful) by the Covenant. Not many Spartans survived the genetic augmentation during their training any way. During the SPARTAN II project, out of the 60 Spartans (30 Male/30 Female), only 32 survived the augmentation, John-117 (Master Chief) being one of the survivors.
few people survived no