This is one of a series of studies on campaigns and battles by Lt Col Kearsey, designed to help the student of military history, particularly those studying for Staff College, and for promotional examinations on Military History. This account was intended for officers studying Jackson's audacious Valley Campaign during the American Civil War, and considers the battles of Bull Run. Kernstown, McDowell, Winchester, Cross Keys and Port Republic. This work is the result of a very great deal of study by a respected and decorated British Army officer who served in the Second Boer War and the First World War.