There are only two sides in the conflict (good and evil) and this is one of our major gripes about the game. There is hardly enough differing types of units to shake a magic sword at. Playing the good guys you have two types of human units, three elven units, two dwarf units and some miscelleanous types such as a huorn (Ent) and Beorning (shape changer). There is nothing really ground breaking in the units and the glaring omission of siege engines and eagles makes you wonder if they have read the books (there is no air or sea units in this game - hello! One dimensional game play went out of vogue when Gollum was still a happy naïve hobbit!). In the campaign you do get to capture and repair a huge catapult however much to our disappointment this is not a freely available unit in the rest of the game.