American Conquest: Fight Back is still a solid game which manages to combine RTS realtime tactics with wargame strategy satisfyingly. Unfortunately, the wargame complexity requires a certain degree of unit and structure-building micromanagement which will appeal more to the dedicated RTS player or wargamer, rather than someone looking for a fun genre game that distinguishes itself with an additional layer of realism.
All is not completely lost. The new campaigns remain interesting and challenging. The game really does try to focus on historical accuracy in terms of uniform details, unit types, and the use of formations on the battlefield. There also have been few games that allow you to command literally thousands of units in battle, and for that this series still continues to shine. Fans of the American Conquest and history buffs can look forward to more grand battles on a truly epic scale. For everyone else, there are plenty of better RTS games to play.