The would could have lasted if they had been actively preserving it, but I doubt that that's the case. They've repeatedly had to rebuild lots of Gettysburg.

On a side note, I'd never learned that the Americans didn't have proper, muzzle attachable, bayonets for most of their battles and units. When I found that out, suddenly, a lot of British military behavior made sense, but their commentary is infuriating. All those aggressive frontal assaults make sense because if you get close to the Americans... they have to break. They literally do not have bayonets and literally can't defend themselves from a charge. Meanwhile the British letters are all "haw haw haw, the Americans run from the bayonet. What cowards!" That's bullshit. Your rifles have pointy bits. Of course the Americans aren't going to get stabbed in the gut. No wonder they started shooting from 100 yards.

Simultaneously, it really gives credit to the Americans at the Battle of Germantown. They made a ballsy fucking charge right into the British lines, through a town, with close artillery support, under cover of fog, but with no bayonets. That's great to have those advantages, but make no mistake, charging a defensive position that has bayonets when you don't have one... is super sketch.