One of the great 'What Ifs' of military history, the Battle of Marengo 1800 firmly secured Napoleon's position as First Consul. Having returned from Egypt and seized power, Napoleon led the Army of the Reserve over the Alps against the Austrian Army besieging Genoa. This book describes the run up to that fateful battle and details how the arrival of Desaix's Division led by Kellerman's cavalry threw the Austrians into confusion and turned the battle in Napoleon's favour.