“There seemed only to be enough manuvering to take some high ground, and then bloody massed attacks by the other side to dislodge from that high ground.”
Not a bad tactic when one is out numbered 2:1 as Lee often was.
Actually, the standards of the day called for an attacking force to outnumber the defenders 3-1 or 4-1, so at 2-1, usually defending his home territory, and with the benefit of interior lines, we would have to assume even a merely competent general could do well. On neutral and Northern soil, Lee’s failures are well known.