At Gettysburg Confederate gun emplacements we’re firing over the top of the Union targets. A complete waste of energy. Longstreet lost a third of his strength on the first charge yet Lee sent them up again. Picket’s charge wad a complete disaster.
The North had the advantage of high ground and good cover. Stewart was absent. That battle was the beginning of the end for the south.
McCellan was a timid politician and had plenty of chances to prove his worth.