What did the Mongol Warriors carry during the conquests?

Mongolian military had a decimal system. The smallest unit was 10 (aravt). Ten aravts became one hundred (zuun). Ten zuuns became thousand (myangat). Ten myangat became 10,000 (tumen).

I think this part of Mongolian military trivia everybody is aware of. But do you know why was it set up this way?

Each soldier meant one family. So Myangat meant, not only 1,000 strong military…