Major Works:
* The History of the Fourth Foot (King's Own Royal Regiment) (1896): A detailed account of this renowned British regiment's history, from its formation in 1685 to the late 19th century.
* The Last of the Old Guard: A history of the Grenadier Guards of the French Imperial Army.
* The Life of Napoleon: A biography of Napoleon Bonaparte, focusing on his military career.
* The Russian Campaigns of 1812 and 1813: A study of the Napoleonic campaigns against Russia.
* The French Army in the Peninsular War: A detailed analysis of the French military in the Iberian Peninsula during the Napoleonic Wars.
* Napoleon Bonaparte and the Invasion of England: A historical account of Napoleon's plans for conquering England.
* The Story of the 1st Royal Dragoons: A history of another prestigious British regiment.
* The Story of the 1st Battalion of the Royal Scots: A chronicle of the Scottish regiment's history.
Other Works:
* The Old Guard: A Chronicle of the French Imperial Guard
* The French Imperial Guard: This was a large and comprehensive two-volume work on the French Imperial Guard during the Napoleonic era.
* The Peninsular War: A book on the conflict in the Iberian Peninsula.
* The Life of Wellington: A biography of the Duke of Wellington.
* The Life of Nelson: A biography of the British naval hero.
Legacy:
W.H. Longridge was a respected military historian, known for his meticulous research and insightful analyses. His works remain valuable sources for understanding the Napoleonic Wars and the military history of the period.