Once you've purchased the content, you will unlock all new 15 Elite Units of the West in the single player campaign under the conditions below. Though their background owes a lot to European military traditions, their identity is tied to the destiny of the United States, and gave these men courage and audacity like no other soldier on the battlefields. The 15 units from the Elite Units of America Downloadable Content have all played a major part in the American Revolution. In the last half of the 18th century, the political upheaval from thirteen of British Colonies in North America ultimately led to the 1776 Declaration of Independence and changed History for ever. The Elite Units of America Downloadable Content for Empire: Total War™ adds 15 new elite units to the American, British and French factions of Empire: Total War.