I need to get around to writing up a description of the Joint Congressional Committee on the Conduct of the War, commonly referred to as the JCCW. For now, I guess you can check out this Wikipedia entry. If you’re more daring, check out Bruce Tap’s Over Lincoln’s Shoulder.
I hope you’ve been reading the testimony as I post it. If you read everything sequentially, you see how the committee members are striving to make their points, attempting to back the witnesses into corners, favoring certain testimonies over others, looking to get their man. Gradually, you become proud of some witnesses for sticking to their guns and are repulsed by others for pandering to the committee. And you begin to realize that this had less to do with finding the truth than with establishing a truth.