you've made my point..
I have visited gettysburg every few years since the 90's. Its changed, The confederacy has been all but erased from the area.
the monuments were put up by union soldiers. It was only around the turn of the 2oth century that confederate monuments began to be built. And the people who hated to have the confederate flag on the battlefield park. were the veterans themselves. Next time you go to Gettysburg visit the Virginia memorial and see the flag that is on display on that monument. It was put up around 1917 i think and it does NOT have the confederate flag because the union veterans objected to it. So the state flag of Virginia is displayed NOT the traditional battle flag of the confederacy.
Texas put up a good showing and paid a terrible price. This is the memorial they placed over 100 years later:
There are definitely places all over the battlefield that make you feel something - melancholy, sadness, pride...
Probably one of my favorite places was on the huge PA monument where it tells of the dedication ceremony and how veterans of both sides attended, talked, shared experiences and walked away as friends. A lesson for all of us.