Ordering and participating the slaughter of thousands of innocent people is more than a character "fault" (as the English Patriot puts it). It is mass murder. I haven't got anyone on my list of heros who slaughters people for THEIR cause, or for ANY cause.

Slaughter of innocents is slaughter. It is wanton murder. No one who does that should be on any heros list.

Including Harry Truman, who also ordered the slaughter of innocents in Hiroshima and Nagasaki.