: : All anyone can do is make some educated guesses. I think we've had a couple of threads on this in the past, though I don't recall any specific details. Once all the good guys got assembled there were probably 15-20,000 men fighting for Minas Tirith and Gondor, and probably well over 30,000 fighting for Sauron.

: That seems a bit lite. Sauron's forces would have to greatly outnumber those in Minas Tirith to have a chance of success. Even had the WK entered the main gate, The Gondorians could have turned each level into a killing field. There would be little or no room for Sauron's forces to maneuver within each level. Grond could probably no be brought to bear within Minas Tirith on the inside gates.

: : But for the most part there are no numbers provided. You just have to imagine large numbers of Men, Elves, and Dwarves.

: : I've always imagined the armies of the War of the Last Alliance numbering in the hundreds of thousands (perhaps 150-200,000 on the Alliance side, and many more on Sauron's side).

: Russ

Agree with Russ on Ring War, Michael on last alliance. As attacker, it is generally considered sound judgement to deploy three times as many soldiers as your opponent, if attacking a fortification five times as many. I imagine these numbers would have to be enlarged for the sort of low quality troops Sauron generally mustered against the high-quality forces of the west.
If we look at comparable battles (I tend to look at late Roman ones) they usually included 5000- 30.000 men on each side even in very decisive encounters.
NT