It is pretty hilarious that these Spartans didn't actually won in Thermopylae, didn't build any empire, barely managed to defeat democratic Athens in Peloponez War after 30 years of struggle... To be defeated by THEBES soon. And later by Macedonia. And Rome :d So - called Spartan superiority existed in the small part of small Greek country.
The problem of Sparta was not the quality of it's army (excellent and superior to their contemporaries in Greece) but the very special condition of their society:
1. The Spartan army itself could not grow.
Only full citizens, known as the Spartiates, were raised and trained as elite soldiers.
The size of the core army was very small: the number of Spartiates decreased from 6,000 in 640 BC to 1,000 in 330 BC.
The rest of the army was auxiliaries with relatively poor training and equipment.
2. The main occupation of the Spartan military was to keep the Helots subjugated, so Sparta could only commit part of its forces to any war outside its borders.
Honestly I cannot imagine better soldiers than these from Mongolian Empire.
I agree that they were excellent soldiers and the Mongolian state could use every Mongol as a soldier.
They had great tactics and capacity to hit hard.
However they were successful mostly against states that were highly divided and incapable to organise a solid and long term defence.
The Mongol failed to win against well entrenched states that could focus their resistance.
So, where goes my vote for the best army?
I saw some recent (propaganda) photos of the army of Thailand:
With such soldiers I would "surrender" immediately
p.s.
the photos are due to a propaganda move of the military regime now in charge in Thailand:
http://www.telegraph.co.uk/news/wor...orous-army-girls-to-win-hearts-and-minds.html
I came back from Thailand recently... great country really