Ask me next week AFTER I get done looking over all my civil war notes for my final. [:D]
On the up side, this DOES give me another angle to consider when studying for said test.
I think it woulda been a more challenging question to ask about the pre-'63 leadership, since, as a rule, ALL the Union armies were rather poorly lead, with some notable exceptions. But the battles and reorganizations of '63 did a LOT to push the bad generals out, and the good people up into higher leadership positions.
Especially true of Union Cavalry, which was dismal at best until late '63 and into '64.
Edited to add bit about pre-'63 leadership.
Edited (again) to say that to answer the pre-'63 leadership bit, Gen. McClellan (Army of the Potomac) was, IMHO, a paranoid, no-good, incompetent leader. Good at training men, HORRIBLE at actually leading them. Severe confidence problems, always thought he was outnumbered, even when he had evidence (reports, etc) that he was outnumbering them 2:1, never wanted to attack. All bad traits in a combat commander.