Clone Wars Campaign Guide
Some interesting information from the Clone Wars Campaign Guide:
1. The guide acknowledges that the Clone Wars was the most wide-spread, influential, and largest conflict the galaxy had ever seen up to that point.
2. The guide acknowledges repeatedly that the CIS and Republic have pretty much absolute parity of forces.
3. The guide's figure for CIS ground forces: a quadrillion battle droids.
4. The guide's figure for Republic troops: three million (though it specifically notes that it doesn't include support units).
5. The guide acknowledges that the Republic and Confederacy each have capital ships that number in the several, several, several thousands and make casual use of terms such as "fleets" and "armadas."
6. The guide offers surprising commentary on the power of Dooku, Mace, and Yoda. Yoda has a combat level of 20, Mace has a combat level of 19, and Dooku is the weakest at 18.
7. The guide mentions that individual battles could "cover the surfaces of planets" and fill "systems," which gives a lot of illumination for scale.
There's more, but a lot of it has slipped my memory.