Two things on Mark’s comments.
Further to Marc’s comments
#1. Looking at the Agrarian society farmers model. It’s important to distinguished that in the Nomad society, the Raider/warrior is the Farmer. Pillaging as he moves along, living off the milk of his horse, loot from the conquest, bounty of the land.
As for Mongol Officers - Let’s review some important distinctions. I wouldn’t necessary call Mongol officers “Staff” officers in the sense we know them - but it’s important to note that Mongol officers were not needlessly expended - but rather protected.
The Mongol battlefield tactics were a combination of masterful training with excellent communication and discipline in the chaos of combat. They trained for virtually every possibility, so when it occurred, they could react accordingly. Unlike many of their foes, the Mongols also protected their ranking officers well. Their training and discipline allowed them to fight without the need for constant supervision or rallying, which often placed commanders in dangerous positions.
Whenever possible, Mongol commanders found the highest ground available, from which they could make tactical decisions based on the best view of the battlefield as events unfolded. Furthermore, being on high ground allowed their forces to observe commands conveyed by flags more easily than if the ground were level. In addition, keeping the high command on high ground made them easier to defend. Unlike the European armies, which placed enormous emphasis on personal valor, and thus exposed their leaders to death from anyone bold enough to kill them, the Mongols regarded their leaders as a vital asset. A general such as Subutai, unable to ride a horse in the later part of his career due to age and obesity, would have been ridiculed out of most any European army of the time. But the Mongols recognized and respected his still-powerful military mind, who had been one of the Genghis’ most able subordinates, so he was transported around in a cart.