Pretty sure you're thinking about British generals.
American generals, led by Black Jack Pershing himself, had no problem with snipers (or sharpshooters, as they were more commonly called back then). In fact, a sharpshooter named Herman Davis was one of Pershing's favorite soldiers.
Heck, Alvin York, the most renowned American soldier of the First World War (and a good Tennessee lad), was known as a fine distance shooter.
'That’s jest a good shootin’ distance': Five American Snipers of the Great War | Historynet
6 American Heroes of WWI
Actually American snipers date back to the American Revolutionary War. The British officers especially generals in all of their finery were often picked off first by young men carrying things called the Kentucky long rifle for instance.