As the question states we hear that Sauron fell during The War of the Last Alliance where Men and Elves united to take down Sauron and his forces.
But what about the Dwarves of Middle-earth? What did they do during the time that lead up to the war of the Last Alliance (from the forging of the Ring of Power to Sauron's fall at the war of the last alliance)?
Were they themselves besieged by Sauron's forces and as such unable to spare any troops to help in that battle? Did they remain neutral? Maybe the majority actually joined Sauron? What was the reason as to why they aren't recorded as having sent forces (or at least so few that it wasn't recorded anywhere) to battle Sauron along with the Men and Elves during The War of the Last Alliance?