the commander of the union fleet at island number ten charles davis who had replaced andrew was reluctant to allow them to go and henry, the cored and sai it. he did. general john pope, who was the army commander there investing island number ten said he needed a second gun bo. but agreed to allow "uss pittsburgh." these are built at the end of 1861 and early 1862 that captured ft. henry and held with capture of ft. donaldson and those gun boats made it possible for pope's army to trap the entire garrison at island number ten and capture them. so these tactics of running which went back to 1861, they were bearing a lot of fruit here on the river in 1862. >> dr. mcpherson, thank you about some of the examples that you provide in your great study, of the individual decisions made by people like david faragate, why do you think that as many officers especially of the naval forces, marines and sailors, made the decision in 1861 to stay with the old flag? >> there are some other good examples of that. i mentioned lee. he was a virginian. drayton is one of my favorite examples. a naval officer