Until Sherman and Sheridan, warfare among “civilized” armies was between field armies primarily - where it belongs.
Sherman and Sheridan started the policy of warfare against civilian populations in modern times and the Brits expanded it to horrific new levels in the Boer War.
So, to quote Captain Kirk, Sherman and Sheridan showed us “why war is a thing to be avoided.”
You may notice my reference was to “civil wars.” Would you care to point out an example of another large-scale civil war where the military/civilian death ratio was equal to or lower than that of ours?
You're kidding, right? The civilian casualties from the Napoleonic Wars alone are estimated at a low of 750,000 and a high of 3 million. The Seven Years war killed off another million or so. Hundreds of thousands died during the Indian Rebellion of 1857. Tens of millions were killed in the Taiping Rebellion in China, which finished around the same time the Civil War was ending. The fact is that civilians have been targets in all wars. Sherman and Sheridan didn't invent the concept, and it had been perfected long before the Boer War came along.
That is simply not true.