it wasn't invented by abner doubleday, as he is sometimes given credit for, but a day like today, let's play two. host: we go to brian in fernandina beach, florida. are you on the air? caller: yes, i am. professor blight, i would like to get your impression or opinion on whether you think perhaps the union, beginning at appomattox, was too lenient on the confederacy, particularly its political leadership, and that impact on the success of reconstruction. david: that is a great question, sir, long examined by monday morning quarterbacks about the moral aspects of the civil war. by any legal measure thousands upon thousands of southerners had committed treason. if you resigned your commission in the u.s. military to take up guard -- take up arms against your government, that is treason. if you resign your seat in congress to join the political movement against your government, that is treason. that is one thing. at the end of the war, it was abraham lincoln's vision, and many other people were with them on this -- he did not want this war to end in enveloping guerrilla warfare that might