[Burnsaber]

For best combat effectiveness, the Vaetti infantry should be mixed with the size 4 giants. You'll have to make a bit of a grafty combat placment since the Vaetti and Giants have different AP values, but a giant sharing his square with two vaetti is three times more dangereous than alone giant.

Even if the Vaetti don't manage to deal any damage in melee, their attacks will cause the opponents defence to go down. It also makes the giant much more resistant to ganging sice opposing attacks get separated between the giant and vaettis.