But fortunately, if they were wild and brave, they were also greedy for plunder, and besides that they could not stand cold or rain. So once a year too, usually in October or November, they turned back again, and their mules and camels, loaded down with booty, could not move back as fast as they had come.

“This is the way to beat them,” said one of the strategy books. “Always know where they are. Whether you are eating, taking a bath or sleeping, never turn away a man who says that he has information. Whether he is a freeman or a slave—no matter who he is!”

And then track them down, catching them in the narrow, snowy, chilly mountain passes if possible. They won’t fight well when they are trapped and shivering. Or if they don’t go back of their own accord, raid their own country and in this way bait them back. But whenever you fight them, or anyone else, be sure you know what you are doing. Above all, don’t throw everything into the battle at once. The general with the last reserves always wins.

The Byzantines also taught their generals not only how to fight but when to fight, and also when not to fight, which was even more important. They believed that it was better to be safe than sorry. The Byzantine general was told that he must never be rash, and above everything he must never throw his troops into battle where they might be killed or wounded if he could win the day by stratagems or tricks.

To be sure, he must always keep his pledged word. If he didn’t, who would believe him next time? And the lives of captives must always be spared if possible. One day they might be on the Byzantine side.

But it was all right to send an officer under a flag of truce and have him pretend that he wanted to discuss terms for surrender, when he was really acting as a spy. In the meantime, the Byzantines could bring up reinforcements. It was all right to forge letters showing that an enemy commander was turning traitor and then arrange to have them fall into his general’s hands. It was all right to disguise soldiers as innocent herdsmen driving bleating sheep and lowing cattle, and have them lure the enemy into a prepared ambush. Obviously, a feigned retreat was a recognized part of the game. Even a real retreat did not disgrace a Byzantine general, although the Byzantines were just as brave and proud as anyone else. At least the general who retreated would have some soldiers left and could fight and win another day.

The Byzantines also believed that if you wanted a good army, you must pay it well and treat it even better. A general’s salary could be as much as forty pounds of gold a year, and even a recruit had cash in his pocket. When a soldier served his time he might also get a grant of land. There was a well-organized supply department, and the soldiers were always sure of beans, cheese, and wine, to say nothing of what they could plunder from the country. A special corps of engineers pitched their tents for them and set up huge baths. The soldiers were even allowed to have slaves and servants. The army itself provided a groom for every four cavalrymen, and every sixteen foot soldiers had an attendant who drove a cart carrying all they needed. There was even an ambulance corps of stretcher bearers and surgeons. The stretcher bearers were paid a gold coin for every wounded man they brought from the field.

This is what the Byzantine regular army was like, but besides that, especially in the early days, there were regiments or even whole tribes of Huns, Goths, Alans, and other barbarians who fought for the emperor under their own chieftains. Later on, particularly in Asia Minor, there were also the great feudal lords, or Border Men.

There is a wonderful Byzantine poem called Digenes Akrites about one of these men. Its hero is Basil Digenes Akrites, son of an Arab emir named Monsour and a Greek lady of the noble Dukas family. For this reason he is called Digenes Akrites, which means “border man of two races.”

Basil was a valiant knight like Roland and Sir Lancelot, and in spite of his Arab father, he was a faithful Christian. And so when he wasn’t slaying lions, fighting cattle thieves, or rescuing lovely damsels, he was ready to join forces with the emperor and lead his men against the infidel.