Flame Veterans are infantry units found in both Battalion Wars and Battalion Wars 2 for the GameCube and Wii, respectively. These units wield flame throwers that can easily kill all of the infantry units and light recon units, though when used against tanks they'll have no effect whatsoever.
Their range is very short as expected, though they'll deliver heavy damage against the opposing enemies, specifically the infantry units. It's best if you take control of them directly rather than allowing an A.I. to do so, as you'll be much more successful.
The Flame Veterans' flame thrower will over heat if you spew too much fire without stopping, so it's best if you shoot it in short bursts. There's a gauge telling you when you're about to overheat, so be sure to look that over.