So basically, I bought Civ5 a couple years back on a whim (vanilla release too, ouch!) and became obsessed. It's kind of got me into playing strategy games and I persevered though all the patches and expansions until I got really, really hooked. However, I know it's a common sentiment that Civ4 is better (or, at the very least, different enough to be interesting) so I bought the complete edition a couple months back. I've slowly figured out how to play, and I love it! My economy never really crashes, I don't fall behind in science and I can handle diplomacy well enough. I've won on Settler, Chieftain and Warlord already, and have a few unfinished games on Prince. Why are they unfinished? I just can't wrap my head around combat in Civ4. I've read all the tutorials, watched a few Let's Plays and experimented enough ingame, and have learnt nothing. I'm okay with defending. Archers/Longbows/etc in cities, a few mounted units to protect my improvements. Actually going out and attacking another civ and, god forbid, capture a couple of cities is a complete mystery to me. I personally think it's the stack warfare system. How big should a stack be? Should I ever send units alone? What is collateral damage? What the hell is a first strike?! Any help would be greatly appreciated. It's this small thing that is hampering my enjoyment of a fantastic game.