so on round two, I might turn up another force card on a beach instead of attacking? The opponent has to choose though I think.
Each Player Turn you conduct actions one beach at a time from left to right. You perform one Action at each beach.
(Note: some cards allow you to perform additional Actions)
An Action is either:-
Activate - Turn face-up your top Force Card assigned to that beach. That Force is now active.
Attack - One of your active (already turned-up) Force Cards may attack one of your opponent's Force Cards (your choice).
If he kills the force, does the other one take over immediately and the battle keep going?
If the attack succeeds, the defending (opponent's) Force Card is discarded and removed from the game.
What happens to the cards played against the previous force card on that beach (discard and start new fight, if you have enough cards?)
Do you mean any Action Cards used to influence the battle on that beach?
Action Cards only apply once and then are discarded so...
Yes, these cards must be discarded and you can't start a new fight on that beach (only one Action per beach) unless you have a card in play that allows additional actions.
For example, as the Allied Player on Sword Beach, you can declare an Attack with the I Corps Force Card (#008) and it does not count as an Action for that beach (see the text at the bottom of the Force Card). So, if you had another active Force Card already on Sword alongside the I Corp #008 card, you could 'spend' the one Action attacking with that as a separate Attack.
Hope this helps.
BTW don't feel too frustrated by your initial confusion with the rules. They aren't the clearest.
You may find the FAQ posted in the Links section on the game's page to be of some help.
If not just post again here and someone will be along to help. [wink]