So they are pictures of mongol soldiers scanned from books I have.
sorry for bad quality of images and bad translations of the descriptions due to my poor english skill.

[URL=http://imageshack.us/photo/my-images/259/mongol1.png/][IMG]http://img259.imageshack.us/img259/2679/mongol1.th.png[/img][/URL]Left:
Mongolian Horse ArcherFrom their childhood, mongolians trained with horse riding and archery, and they consisted cavalry corps with superior archery techniques. their armor is very light. Some wealthy men of them wore armor patched with metal plates, but their true source of strongness is a mobility, so they prefered to wear very light armors. Their underwear are made by silk, their long coats are felt, and leather cuirass.
Silk clothes are expensive, but elastic, and when wounded, the silk clothes press the wound and stops bleeding. so they prefered to wear them more than heavy armors.
Right:
Mangudai(Special Attack Troop)
"Mangudai" are light-cavalry. Their task is to bring enemy force into prepared traps of mongolian main forces. So to speak, their task is to be used as a decoy. When encounter with enemies, Mangudai release arrows and fallback immediately. They are even break ranks purposely when fallback, to provoke enemy pursuit. the enemies pursue mangudai unwary trapped into mongolian main forces. Like racehorses today, mangudai's horse kicking strap was attached near the saddle, to lift the rider's hip.
[URL=http://imageshack.us/photo/my-images/189/mongol2.png/][IMG]http://img189.imageshack.us/img189/1310/mongol2.th.png[/img][/URL]Left:
Mongolian Heavy cavalryMongolian heavy cavalry were used to finish the enemy force wavered by arrow attacks. They equipped 4meters long lances, and single-edged scimitars, and bows. Both rider and horse were armored with Lamellar armours, and wore mongolian boots which have curved up front tip.
Right:
Kheshig"Kheshig" are true elites of mongolian armies, only the choosen best soldiers could be Kheshig. When Kheshig first appears in record of early 13th, Kheshig consisted by 1500 men, but when Genghis Khan became a leader of mongols, members of Khesig was 10000. Their military organization was called "Keshiktei", which main role is as bodyguards of Great Khan, but Keshiktei also worked as an leader development institution of mongolian officers. Khesig soldiers wear heavy armours, which means they are not only chosen elite soldiers, but they also are wealthy nobles suitable to be officers.