What could have been done better at Gettysburgh?

[Kraxis]

Those pictures really helped a lot...

Maps don't say everything, or even enough.
To me the surprise really is, why on Earth the rebels chose to attack pretty much in the only places where there were open land with enough extent to make their advance costly.

Also, that the Little Round Top actually looks like a sniper's dream, save the bushes. A flat line to the target, somewhat above him, good hard cover around and a nice blend of colours. Infantry should have been pretty safe among the boulders and rocks.

And now Pickett's charge seems even more foolish. The most open terrain, up against a strong defensive position and with open flanks more or less. GAH!