Battle below Termopilian canyon

In the next episode my story about war between Greeks and Persians I tell you about absolutely brillant defence in Termopilian canyon.In 480 year before Jezus Christ was born King Kserkses with 100 thousands soldiers set off against to 7000 Spartans command by King Leonidas.When the battle started King Kserkses send 20 thousands soldiers against to 7000 Spartans who without problems won first part of battle.Greeks falang was not destroyed.In second part of battle the next 10 thousands retreat. The main problem as we see is that Persians couldn't unfold his army in very small canyon which was impossible cross across Greeks falang but Efialtes from Malis who was Greek tell to King Kserkses indirectly road to Spartans.In third part of battle King Leonidas told to his soldiers that towmorrow everyone could liegsth dead that's why in day of battle lost only 300 Spartans who were personality guard of King Leonidas.Spartans were surround from every side 300 fight to the last soldier.On the battlefield lieghst dead 20000 Persians and 4000 Greeks and 300 Spartans.On the battlefield below Termopilian canyon now find a board with writing:
Ω ξεῖν’, ἀγγέλλειν Λακεδαιμονίοις ὅτι τῇδε
κείμεθα, τοῖς κείνων ῥήμασι πειθόμενοι.
Ō xein', angellein Lakedaimoniois hoti tēide
keimetha tois keinōn rhēmasi peithomenoi.
Przechodniu, powiedz Sparcie, tu leżym jej syny,
prawom jej do ostatniej posłuszni godziny.