There are two types of army name on this generative: English names, and randomized, troll-esque names. This generator gives you 15 random names for troll arms, legions and similar orc soldiers. In general, the English names reflect the nature of the trolls. Since trolls are diverse between all fictional works, the names are also different. Names like "The Frozen Spears," "The Jungle Behemoths," or "The Nightmare Masks," for instance, will exist. There are also fewer frightening names, mainly for enemies or the more puny types of trolls. The troll-esque names are random and intended to be a form of trollish language, but they are quite open to interpretations.
To generate another 15 random names you just have to press the button. With every click 15 new names are generated.