[MplsSteve]

McClellan DID have good information at Antietam.

He had Lee’s “Lost Order” - which detailed out who was in command of how many troops and where they were supposed to be.

He assumed it to be a fake and decided to do nothing - convinced of the fact that Lee dramatically outnumbered him.

A quick reconnaisance by Union cavalry could have proven that the Lost Order was in fact, accurate.

[doodad]

He assumed it to be a fake and decided to do nothing - convinced of the fact that Lee dramatically outnumbered him.

Which was his personal tag line if they had had the internet then.

[BenLurkin]

He had excellent information about their intentions — but he had terrible information as to their strength.