 Complete the following phrase:  John Vincent Johnston of Cincinnati, Ohio, entered the United States Navy, during the American Civil War, in September 1861. He served as First Master on the gunboat St. Louis. He assisted in the Union gunboat attacks that captured strategic Fort Henry on the Tennessee River 6 February 1862. The night of 1-2 April 1862 he was the Naval commander of a combined Army-Navy boat expedition which landed and spiked the guns of the Upper Battery aka Battery No 1 at Madrid Bend Tennessee shore across the river from the Confederate stronghold, 