How many in Battle of 5 Armies?

[Morthoron]

Originally Posted by Eönwë

But for some reason dwarves have always seemed to me
to wear plate armour (they can easily carry it because of their immense strength and hardiness).

*Sighs*

Okay, direct quote from Chapter XVII "The Cloud Bursts":

Each one of his [Dain's] folk was clad in a hauberk of steel mail that hung to his knees, and his legs were covered with hose of a fine and flexible metal mesh...

That description was for Dain's folk, and here's one for Thorin's, from Chapter XIII "Not at Home":

Now the dwarves took down mail and weapons from the walls and armed themselves. Royal indeed did Thorin look, clad in a coat of gold-plated rings...

Really, I've been through this debate before.