American Conquest: Divided Nation is the second stand-alone expansion to American Conquest. It features four new nations in a new timeline: The Union, The Confederacy, The Republic of Texas and Mexico, and more than 120 new units. Old factions cannot fight new ones. The game also brings a host of new features to the game, such as horse artillery, field fortifications, tents, and generals. Players can experience battles entirely new to the RTS Genre, from the Battle of Alamo to Battle of Gettysburg. Modification: The most significant modification for American Conquest: Divided Nation is the Hawks' Divided Nation Mod (HDN) which features realistic multiplayer battles with extensive changes to the combat simulation and an extension to the game engine.