Alexander the Great is one of the most famous men in history, and many believe he was the greatest military genius of all time (Julius Caesar wept at the feet of his statue in envy of his achievements). Most of his thirteen year reign as king of Macedon was spent in hard campaigning which conquered half the then-known world, during which he never lost a battle. Besides the famous set-piece battles (Granicus, Issus, Gaugamela, Hydaspes), Alexander's army marched thousands of miles through hostile territory, fighting countless smaller actions and calling for a titanic logistical effort. There is a copious literature on Alexander the Great, but most are biographies of the man himself, with relatively few recent works analysing his campaigns from a purely military angle. This book will combine a narrative of the course of each of Alexander's campaigns, with clear analysis of strategy, tactics, logistics etc. This will combine with Stephen English's The Army of Alexander the Great and The Sieges of Alexander the Great, to form a very strong three-volume examination of one of the most successful armies and greatest conquerors ever known.