AT last count there were going to be 12 different charcters clsses. So 12 distinct textures for the troops. I haven't come up with the buildings,defenses, or weapons yet so I'm not sure about those. To tell the truth I haven't even thought about team colors yet. The opposing sides will be of different races. Monster VS…
Games like the Warhammer RTS titles use 512x512 textures on quite a few units. The first P.O.S game I worked on was an RTS, and we used 128x128 mostly. We had a 'high' setting though, which used 256x256 maps. You might want to consider using vertex shaders though, as you'd get much more performance. Making the CPU compute…
also wouldn't how close the camera can get to the action play a factor in the texture size? Vassago's recommendations sound about right. about 512 if you're going warhammer style, maybe 128 if you're doing something similar to total annilhation or warcraft 3