Alterac Valley is a complex battleground, but it’s also been out for a long time so I’m not going to spend time going over the basics. There are two basic ways to win this BG, and I’ll go over them today.
People often do this at least once in their lives to get the achievement for winning AV in 6 minutes or less. The shortest I’ve seen was a 5 minute game. The strat is very straightforward: you just convince everyone on your team to rush for the general as fast as possible. Just make sure you bring a pair of competent tanks and healers with you, because there’s no guarantee you’ll find any useful pugs in the game you join. Unfortunately, winning AV this way makes for really bad honor. You might get 400-600, tops, whereas during AV weekend I’ve gotten 2600 or 2700 honor for a single game. I suppose if you are honor capped and just wanted AV tokens you could try doing this repeatedly, but I’m pretty sure either the pugs who were helping you would lose patience after awhile, or the opposing team might catch on and try to stop you, at which point it would be come almost impossible to recover once your force has been routed once. Without controlling any graveyards, you would probably be ported back to your base and be stuck in a turtle match.
If one really wanted to ensure victory and try to maximize honor in this BG, you could get a couple friends and go defend galv/balinda, and then recap everyone’s graveyard and tower in the wake of your opponents as they rushed down to your relief hut. With a dedicated group of 4 or 5, this isn’t hard to do at all. The downside of this method is that the game can turn into a turtle. Of course, if your team is on the ball and everyone who isn’t helping you is playing good offense, then the game may only take 15 mins or so. Just be patient, and once you’ve hamstrung the other team’s offense, go to whichever tower they still control that’s nearest to the field of strife, cap it, and guard it until it’s a flaming heap of stone. Then go to the next one down the line, and so on and so forth until the enemy is ~200 resources, at which point you can afford to try for the general.