Heavy Sledge

Heavy Sledge is a campaign-exclusive technology in Age of Empires IV that can be researched at the Mining Camp in the Feudal Age. It is available in The Normans, The Hundred Years War, and The Rise of Moscow. Because the Mongols cannot mine stone, it is not available in The Mongol Empire. It improves the stone mining speed of Villagers by 15%. In all other game modes, this technology was combined with Specialized Pick, which improves both gold and stone mining speed.

v • d • e Campaign-only content in Age of Empires IV
Leaders
The Normans	Duke William · King Harold · King Henry I · Robert Curthose · King Louis VI · King Stephen · Willikin of the Weald · William Marshal
The Rise of Moscow	Prince Dmitry · Ivan III · Ivan IV
The Hundred Years War	Jean de Beaumanoir · Olivier Arrel · Guy de Rochefort · Geoffroy du Bois · Yves Charruel · Jeanne d'Arc
The Mongol Empire	General Subutai · Genghis Khan · Mongke Khan · Baidar · Batu Khan · Liu Zheng · Ismail
The Sultans Ascend	Tughtekin · Shirkuh · Saladin · Reynald of Châtillon (flagship) · Reynald of Châtillon · Shajar al-Durr · Baybars · Templar Grand Master · Hospitaller Grand Master · Teutonic Grand Master · Qutuz · Kitbuqa
Units
Scout Ship · Danish Raider · Gilded Landsknecht · Huihui Pao · Dismounted Knight · German Mercenary · Knight Templar · Knight Hospitaller · Militia · Militia Archer · Pirate · Pirate Ship · Raiding Galley · Spy · Turkic Horse Archer · The Beast · Teutonic Knight · Genoese Crossbowman
Buildings and other
Arsenal · York Castle · Military Tent · Bureau Brothers' Workshop · Siege Camp · Acre Tower · Leader Tent · Resource Pickup · Stone Ruins
Technologies
Heavy Sledge · Planned Extraction · Applied Masonry · Steel Barding · Elite Spear Tactics · Grapered Lances · Silk Bowstrings · Crannequins · Superior Transport Construction · Doused Armor · Corned Gunpowder · Chain Shot · Efficiency Training · Longbow Mastery · Musketeer Regiment · Scouting Falcon · Husbandry · Improved Blacksmith and Arsenal Technologies · Setup Camp · Food Reserves · Berry Cultivation · Construction Drills · Ancient Relics · Any Port In A Storm
Civilizations
Asian	Fatimid Caliphate · Ilkhanate · Mamluk Sultanate · Saladin · Seljuk Empire
European	Anglo-Saxon England · Antioch · Cyprus · Danes · Grand Duchy of Lithuania · Jerusalem · Kingdom of Bohemia · Kingdom of Hungary · Kingdom of Poland · Knights Hospitaller · Knights Templar · Normans · Novgorod Republic · Teutonic Order
Classification of campaign-only civilizations is based on their base civilizations, not geographical locations.