Dwarves of Sauron

[Eomer of the Rohirrim]

burrahobbit, it depends on what you mean by 'alongside'. It certainly seems to me as if there were two sides, Sauron's and Sauron's enemies. Even if a couple of Dwarves barely even knew who Sauron was, yet still went along to the battle to kill some Elves, I would say that they were doing Sauron's bidding whether they knew it or not, and therefore, by killing his enemies, were fighting alongside Sauron.

Maybe there is a difference between being on someone's side, and fighting alongside someone. (Doing my best not to disagree with Treebeard here!)

Of course, maybe there were Dwarves who went about killing Orcs and Elves, in which case they would be on no-one's side but there own.