[Targan]

I don't use a Tactics skill in Gunmaster-T2K but I'm not entirely opposed to the concept, especially if you had player(s) who displayed little or no tactical acumen. Were I to use it I would do so in a manner similar to that described by Legbreaker, and allow the player to make the skill check or I would make a hidden skill check on their behalf depending on the situation (in general I prefer not to make hidden skill checks for PCs but sometimes it is necessary so as not to forewarn the player that something dangerous is about to happen). In the case of a successful check I would give the player a series of options and let them figure out the one that would work best. The better the level of skill check success, the more I would make the right tactic obvious (maybe by throwing in one or two really dumb options that only a moron would choose) or perhaps as has been suggested in other posts by providing more information or insights.

There are some great ideas in this thread's posts. I like Panther Al and Adm.Lee's approaches, I had a couple of very experienced NCO NPCs in my last campaign that provided advice to the senior officers PCs. You just have to use good judgement as a GM and not spoon-feed the players.