SF and the 17 year old quest to find the elusive centre bypassing walls... probably one of the biggest red herrings in the game... There are only two "special" abilities that are actually observable, for which we have some data and actual proof. Ranged SF, pretty much jacked up MI- R5 being the best example, and just regular melee SF, which looks like infantry with a RNG modifier to sometimes provide extra hits. There is no magical unit that scales walls, or other insane stuff. If there was, we would have battle reports adorning the wiki about it.
