These are units you can really care about, units who s names you can remember. Another area I also found quite impressive was the way gold is gathered. Your workers mine gold from inside a mountainside and store them in the gold warehouses. Of course if this warehouse is destroyed, the player loses all the gold within. Gold warehouses are also an open target for robbery.
Nothing beats travelling about in a transportation cart getting free stuff, heh.
But if you re not into thieving about, there is also a trading post for buying and selling Wood, food and gold. But being civs like the Desperados and Indians requires stealing in order to get things like guns and ammunition. You ve heard about all the, goodie goodies of the game now lets talk about those overlooked game issues. America fails to really add anything new to the genre and rather is a clone of previous games before it. However some of the features previous RTS games had a good spot on, America fails to follow up on.