Numbers come from somewhere
/Yesterday on Substack, a young Orthodox Substacker whose work I usually appreciate, feeling perhaps a bit too eager to pause over and reconsider what felt like an epiphany, shared the following:
Caesar was declared divine for killing a million Gauls and enslaving a million more. In the pagan world, Hitler would have been numbered among the gods.
There are a lot of factual problems (not least that this is not why Caesar was divinized) and dubious assumptions built into this note, which is framed as an even more dubious hypothetical (“would have”) anyway, and it was handled pretty thoroughly by responses like this one.
But what proved unexpectedly helpful to me was its use of the one million figure. I’ve seen this statistic repeated over and over again by people trying to paint Caesar as a war criminal—a category that would have been nonsensical in the ancient world—or guilty of genocide, which is itself a loaded and dubious term. I’ve idly wondered where they’re getting this number, statistics from the ancient world being so totally, notoriously unreliable. This time I decided to look into it.
The claim that Caesar “kill[ed] a million Gauls and enslav[ed] a million more” ultimately comes from three passages in sources that post-date Caesar by a generation or more. Here are all three relevant portions in approximate chronological order:
Valleius Paterculus (19 BC-AD 31), Roman History, II, 47: “During this period, including the years which immediately followed and those of which mention has already been made, more than four hundred thousand of the enemy were slain by Gaius Caesar and a greater number were taken prisoners.”
Pliny the Elder (c. AD 23-79), Natural History, VII, 25: “In addition, too, to the victories gained by him in the civil wars, one million one hundred and ninety-two thousand men were slain by him in his battles. For my own part, however, I am not going to set it down as a subject for high renown, what was really an outrage committed upon mankind, even though he may have been acting under the strong influence of necessity; and, indeed, he himself confesses as much, in his omission to state the number of persons who perished by the sword in the civil wars.”
Plutarch (c. AD 50-c. 120), Parallel Lives: Caesar, 15: “For although it was not full ten years that he waged war in Gaul, he took by storm more than eight hundred cities, subdued three hundred nations, and fought pitched battles at different times with three million men, of whom he slew one million in hand to hand fighting and took as many more prisoners.”
That’s it. Whatever sources these historians used, if any, are long since lost. Of these, the closest to Caesar’s own lifetime gives by far the lowest casualty figure. All of them are approximations, a point made especially clear when they write about prisoners.
I ran these sources down thanks to the bibliography in Adrian Goldsworthy’s Caesar: Life of a Colossus. After summarizing the statistics we get from the three sources above, Goldsworthy notes that:
It is hard to know the basis for any of these numbers. The figures given for enemy casualties in the Commentaries on the Gallic War do not add up to such a great total, while Caesar’s account of the Civil War often did not mention such things. It is questionable that numbers for losses amongst the Gaulish tribes were known with precision, although it may just have been possible to calculate from records the number of prisoners taken and sold into slavery. Probably these numbers are exaggerated, but still give some indication of the appalling human cost of Caesar’s victories.
Goldsworthy is a careful scholar and an expert military historian—an area often lacking in other classicists—and his Caesar is the book on this subject, as far as I’m concerned. His caution in accepting the one-million figure is warranted and well-explained.
There are other surviving figures that can indicate something of the devastation of the Gallic Wars; Goldsworthy notes in the same passage that the total tax Caesar levied on his entire province in 50 BC was lower than the funds required for a forum he built. But is that because of devastation or disparities in property values and population density? With factors like these unknown, the surviving numbers can only suggest. Absent our sources’ sources, we can only speculate about demographics and statistics, and even that speculation must be based on what the sources do tell us, however little we choose to trust them. (Here is a very skeptical take on the numbers in Caesar’s Commentaries specifically that should give you some sense of the scope of the problem; it’s not just about battle casualties.)
The obvious point of comparison—the one invoked by our Substacker in the first place—is the death toll of the Holocaust. Certain kinds of skeptics operating under ulterior motives will question the standard figure of six million Jews, but for the Holocaust we have mountains of data available—prewar and postwar population figures, logistical documentation, military and industrial reports, and the Nazis’ own plans and records. (Read Nikolaus Wachsmann’s excellent KL for a deep dive.) For Caesar’s Gaulish victims we have this handful of sources.
One might call ancient historians’ stats and figures “vibes-based.” But lest we feel too proud of ourselves, that’s essentially what that Substacker was doing, too. That note was designed as a zinger, not to provide an accurate picture of history. Which is too bad, because the Christianity-shaped chasm separating even secular modern ethics from Caesar’s is important to acknowledge.
Numbers come from somewhere. It is worth finding out where and, even more importantly, the limits of their usefulness—especially when they are consistently deployed as some kind of gotcha.