Observations on Julius Caesar's Methods of Making War

Caesar’s greatness as a general is usually attributed to his boldness, and the boldness was real enough. But what I find more instructive when I read him closely — and he wrote about himself with a clarity that most soldiers would lack either the intelligence or the honesty to achieve — is not the boldness but the precision. He was bold because he had calculated; he moved fast because he had already thought through what would be required at the destination. The boldness was the expression of prior thoroughness, not its replacement.

He was also remarkable in his person. He could dictate letters to four secretaries simultaneously while riding. He slept in his cloak among his men and was indifferent to weather that disabled others. He ate what was available without complaint and drank sparingly. This physical authority — the authority of a man who demanded nothing from the body that the body would not give — was not incidental to his command. His soldiers saw that he asked nothing of them that he did not require of himself, and this, more than any system of reward or punishment, secured their willingness to follow him into genuinely terrible situations.

“He managed men’s spirits as he managed terrain — he always tried to know what was there before he committed, and he did not lose time mourning what he found when it differed from what he had hoped.”

The tactical innovations were real: the speed of his marching columns, the engineering capacity he maintained for bridging rivers and throwing up field fortifications, the way he could improvise a line of supply in country his opponents thought impassable. But none of these would have served without the quality that underlies all of them — the refusal to be defeated by circumstances, the insistence on finding what was possible in what appeared impossible, and then doing it without pause for complaint.

What the modern prince can take from this is not the particular techniques — war has changed too much — but the principle: that authority is earned by example first and argument second, that the leader who shares the hardships of command is obeyed where the leader who only issues orders from safety is merely tolerated. Caesar slept in his cloak because he understood this, or because he was constituted in a way that made it natural — and the two, in the end, produce the same result.