300 Spartans faced down the thousands of soldiers in the Persian armies at Thermopylae. While they lost, the Greeks ended up winning the war later
300 spartans that comanded 17000 Greeks, with the best naivy at the time an Athenian fleet at sea blocking the rest of the Persian naval forces so they couldnt get flanked. And they were able to delay a very larger force.
Just dont belive the movies I say.
The mandalorians are as much interesting as the jedi or the sith or anhy other culture out therein sw universe, i like them but im not a fanatic about them either.