Actually a violin has a more rounded bridge allowing each string to be played independently with the bow , whereas a fiddle has a flatter bridge and two or more strings can be bowed at the same time to create a more blended sound.
I would venture to say that from the in story clues it wasn’t even a genuine confederate grave but a false stone placed there by Sawtooth. Nearly every American alive in the 1860s had some association to one side or the other in the civil war so in the decades after, just about every cemetery was littered with stones that said and still say USA, GAR or CSA. It was an age where the requirements for being elected to office included veteran status and a manly beard so the opposing sides initials were used liberally everywhere.
I was hoping Splitface would reply to “Got the Uniform, how does this all work again?” … “You wear it idiot, how do you think clothes work?”