Newbie Question--Can you coordinate multiple armies attacking a single province?

[earwicker7]

So, let's say there are three provinces which all touch each other (i.e., armies in province A could move to province B or C, those in B could move to A or C, and those in C could move to A or B). I've got an army in A and B, and there is an enemy army in C.

If I were to send both of my armies into C, would they gang up on C (two armies join to become one, then they fight), or would it be more along the lines of the first army fights, then, if the enemy is still alive, the second army fights them, but the two friendly armies never meet until after the battle is resolved?

This game keeps blowing my mind, but wow, is there a learning curve!