She beat me again at Battle Line

Kathy and I broke out Battle Line again Sunday evening.  I had some pretty strong Tactics cards to work with, but on at least two occasions, I didn't use them early enough, and she managed to win flags that I was positioned to take if I'd used my Tactics cards more aggressively.  She ended up beating me pretty soundly, five flags to two.  I really, really haven't figured out how to win this game (at least not against my wife), but the great thing about it is, I love playing it.