this seems to have added to the empa tus of major james e. powell's predawn patrol and initiated the battle of shiloh at 4:55 a.m. on april 6th. this patrol, of course, was later later regarded as having saved grant's army from utter destruction, giving early notice of the confederate's heavy presence and warning union troops giving them precious time to prepare. thus, it is apparent when new data such as this, that we have much more to learn about why and how the shiloh events occurred as well as what happened. >> thank you. >> that's great to work with pros because we ended almost exactly five minutes a piece. which is a miracle. a compliment. don't you guys ever run for office. that would be a problem. i hope you will remember some of the things that were said. perhaps you have some questions. we will give you a chance to ask some questions. one of the things that's going on in history scholarship generally, we are looking at things we have never looked at before, that we have kind of taken to are granted, obvious things, the role of african-americ