 Complete the following phrase:  The Dahlgren Affair incensed Jefferson and the Confederate leadership. Combined with the desperate, dismal fortunes on the battlefield, the secret service was re-invigorated in 1864. It was involved in the 19 October 1864 St. Albans Raid in Vermont by personnel in Canada, the arson a hrefConfederate20Army20of20Manhattanplansattacksa in northern cities, and future Kentucky governor Blackburns biological warfare plot. Many historians believe the attempted John Wilkes Booth plots in the 