Complex sentence: Yet the Old Guard earned its fearsome reputation through the many military engagements of the Napoleonic Wars, from the Battle of Ligny, to the Battle of Dresden, to the famous and final Battle of Waterloo (June, 1815).
Split into simpler sentences: Yet the Old Guard earned its fearsome reputation through the many military engagements of the Napoleonic Wars. From the Battle of Ligny, to the Battle of Dresden, to the famous and final Battle of Waterloo (June, 1815).