It is kind of ironic for me that someone start a flame fest thread about call ruling and players arguing over them since it just happened to me this session.
So first of all, I'd like to point out that I'm not interested at all at people telling me this and that because they think it is more fair, or because this class need more help than another, etc. I don't actually care about "mundanes get nothing" or some such, I'm only interested in the truth about the rules in question, as simple as possible.
So, this argument started up because one of the fighters in the group suddenly went from two attacks per round with two weapon fighting to 4 attacks per round because of +6 BAB and taking a feat allowing her to attack a second time with her offhand weapon too. Also, it just happened out of a pure coincidence that they purposely went after really weak but extremely numerous opponents which has beaten them down. Without killing them, fortunately.
Situational explanation time: when you have a single attack, it counts as a standard action. Thus far, no problems. When you can do a second attack, you absolutely need to do a full attack to add more than the first attack to the target, which is a complex action. So far, no problems. If you have many targets in front of you, with low HP... You attack and simply kill the monster in one shot. If you don't do a full attack then you've used up your standard action and you can't attack again in the round. If you had announced a full attack on the monster the rules state that you can even retract yourself about the full attack and get back your move action. No problem here either.
The problem started, I think, when the player in question realized that I would not allow her to do more than 2 (or 3) attacks per round if she kills the first target in one shot (because she have two weapons) even though in reality she has the potential to do 4 per round. Basically, because she could deliver a max of 4 attacks total in a turn she wanted to be able to kill 4 enemies per round as long as damage and tohit was sufficient. To which I replied, you can't usually actually attack more than one target per turn. Unless you possess a feat which allow you to do so, like cleave or better yet greater cleave which, I believe, was created exactly for this exact kind of situation.
So, in the end I simply told the group that I didn't actually cared to be right or wrong and that I'd check for the next session simply to know the truth. But they didn't want to let go and it ended up in a 30 minutes debate because one player was away at the time and it fueled up the discussion up to a heated debate simply because there was nothing more to do. In which they kept throwing at me the full attack mechanics, which I know by heart, and me telling them that what they were telling me wasn't enough to convince me in the least. Fun stuff.
I tried to explain to them that I was fine by checking it for next session and that it was simply normal that I step back to the rule I have been using for about 30 to 40 sessions already when in serious doubt. I wish they could have understood that.
So anyways... Here is the question the simplest way I can formulate it: can you actually attack a second target in the same round with the same weapon, using a full attack with enough BAB, if the first attack was strong enough to kill the first target? Without using a feat.
My own opinion is no, because in the rules when you declare your attack you actually choose a single target. Also, logically, why would there be a feat made up exactly to be able to hit more than one target in the same round if the mechanics allowed you to do so in the first place? Moreover, in all my D&D experience (which is not that extended but still) I've never actually seen someone (fighter would be likely) declare to be able to attack two different targets at once in the same round without the use of a feat. There always been at the very least a single fighter in every single group I ever seen as a player or a DM and it it was something possible I'm sure I would have heard about it at least once?
Also, in the end the rules are extremely vague on this. Nowhere, in the 30 minutes of debate in which I was frantically trying to find a reference somewhere in the player handbook which could end the debate in a way or another, have I found a clear reference to being able to attack more than one target in the same round. Nor did I find a reference somewhere restricting a melee character to an attack on a single target per round.
What says you?