"A great national calamity has befallen us" -- "I am willing to follow him blindfolded." : Lee, Jackson, and Confederate strategic imperatives -- "God blessed our arms with another victory." : the partnership created -- "I trust that God is going to bless us with great success." : the partnership perfected -- "Well General, you may try it." : Chancellorsville -- "Who can fill his place I do not know." : the partnership broken -- "If Jackson had been there I would have succeeded." : Lee, Pennsylvania, and strategic contingencies -- Appendix: insights on leadership drawn from the Lee-Jackson partnership.