I guess what I was asking as a 'fighting style' is whether it is a skill that allows you to go to ground out of your own choice, you know, like guys taking a dive on purpose in soccer.
My wars for example almost never gets sent to the ground(less than 1 in 10 fights), so if I can't 'choose' to go to ground out of my own choice, this skill will be a complete waste for my guys if I picked it.
If it can only be used when down and cannot be actively triggered by yourself to dive to ground, as it seems from the description, then I doubt there are enough war managers out there who can trip over often enough to make good use of this skill. Heavily encumbered tanks with shields would probably be the only group that can use it regularly enough, and that's a rather small group to justify a tier 6 skill for.
If my take above is correct, then I'd rather have a different offence skill.