What number of units do you think each side fielded?

Beneath one banner;
Anuirian,
Masetian,
Basarji,
Rjuven,
Brechts,
Elves.

Beneath another;
Vos,
Adurians (and I can only imagine a vast number of these),
Orogs,
Goblins,
Beastmen & Gnolls


You don't have to list your guesses at the individual tribes (but if you want to, go for it) but I'm curious as to the overall epic scale of the battle. I'd imagine that each side had hundreds and hundreds of units battling, and I personally believe that the total number of units overall numbered in the 1500+ range...after all, its basically two continents warring.