re: Thoughts on The Hobbit: The Battle of 5 Armies (Spoilers)

So there were two Orc armies then...that's what we couldn't figure out (if it was two parts of one army, or two different armies).

So we just never saw much of the second one, which was the one they kept talking about coming in from the north, correct?

And the dude who came flying in with the eagles and dropping bears on everything...that was just sort of reinforcements and not an "army," yes?