So swords have almost never been an actual battlefield weapon, but a side arm. The sword is what someone uses when their spear breaks or they have no time to reload their gun.

The real role of sword masters were in training nobility in private self-defense in major cities like Paris and Milan, and dueling other nobles. Which notably was not the context for America, even a century before the revolution. Hence why pistols specifically came to replace swords for most of the aristocracy and bourgeoise that made up America's upper class.

That being said, there were a number of famous fencers and teachers of swordsmanship. George Patton saw himself as quite the expert swordsman and set standards to be taught to US calvary, and Teddy Roosevelt was an avid fan of cane fighting.