Mech Commander 1 & 2 is tactical alright. And one could consider it squad too. But that's about it. The game is horrid. Just because there aren't many it doesn't mean I can't be picky :)
Rome: Total War and Command & Conquer are strategic. Not tactical.
Final Fantasy is an adventure/RPG game, Sentral. C'mon!
Suikoden Tactics never heard before. Went to check it... it's not a tactical squad game either. It's some mixture of RPG, battle and item hunting. If every game that had characters fighting as a team could be considered tactical squad based, I wouldn't be complaining.